St. George Monastery on Büyükada: The Complete Visitor Guide to Aya Yorgi on Prinkipo

The Greek Orthodox Monastery of Hagios Georgios Koudonas — "Saint George of the Bells" — occupies the summit of Yüce Tepe, the southern and highest peak of Büyükada. The island itself takes its name from the Greek Prinkipo (meaning "first" or "prince"), a word that survives in the English collective name "Princes' Islands" and the Turkish term Adalar.

The monastery's deep origins are rooted in legend more than in surviving documentation. Tradition places the founding in 963 AD during the reign of Byzantine Emperor Nikephoros II Phokas, but no contemporary record confirms this. The monastery's distinctive epithet — Koudonas, "of the Bells" — derives from a later legend: local tradition tells of a shepherd boy in the early seventeenth century who heard bells ringing from underground on the hillside. Digging where the sound was loudest, he uncovered a buried icon of Saint George, hidden, the story holds, by Orthodox priests protecting it from the Fourth Crusade's sack of Constantinople in 1204. The icon's miraculous recovery revived the site's spiritual significance and gave it the name it still carries.

What the historical record does confirm is that by 1751, the Ecumenical Patriarchate had documented the construction of a chapel on the site. An older modest structure — known today as the eski kilise (old church) — survives alongside the main building. The stone church that forms the centrepiece of the visible complex today was built beginning in 1905 and formally opened in 1909, making most of what visitors see a building of the early twentieth century, even if the site's spiritual identity reaches back much further.

Through the Ottoman period, Büyükada had a predominantly Greek population, and the monastery served as the spiritual anchor of that community. Annual pilgrimages grew steadily, drawing worshippers from across Istanbul and, on the principal feast days, from further afield. The traditions established in those generations remain largely intact today.

Aya Yorgi is remarkable among religious sites in Turkey for the breadth of people it draws. Orthodox Christians, Muslims and secular visitors all participate in its traditions, giving the site a genuinely cross-faith character in practice even though it remains an active Greek Orthodox monastery in identity. An academic study published in 2020 describes it as a "shared pilgrimage-shrine" — a designation that reflects what you will observe on any busy day at the site.

The most visible custom involves tying coloured thread or rope to the trees and bushes lining the hillside path during the ascent. Local belief associates red thread with wishes for love and relationships, and white thread with health and peace. Some pilgrims bring a spool of rope and unwind it the full length of the path to the church — a practice said locally to "open one's fate." Silence is traditionally observed during the climb; a small number of especially devoted pilgrims ascend barefoot.

Inside the church, the rituals continue: lighting candles, offering prayers before the icons of Saint George, and purchasing a small bell or key from the church as a token of one's petition. Tradition holds that if the wish comes true, the pilgrim returns the object to the monastery. These are folk customs — devotional practices that have evolved over generations — and they coexist with the monastery's formal liturgical life rather than replacing it. Visitors of any background are welcome to observe and participate respectfully.

From Büyükada's central square (the meydan, near the electric vehicle terminal), the trail to the monastery is approximately one kilometre of continuous uphill path, gaining roughly 150 metres in elevation. The ascent takes most visitors between 20 and 45 minutes, depending on fitness and pace. The path is unpaved in sections, steep through the middle stretch, and can be slippery in wet weather.

The climb is achievable for most reasonably fit adults. It is not suitable for visitors with significant mobility difficulties, and it is not accessible for pushchairs or wheelchairs. The path is exposed to direct sun from mid-morning, making the afternoon climb in July and August genuinely uncomfortable. An early start — before 09:30 in summer — is strongly advisable. Most visitors walk both directions, with the descent taking noticeably less time than the ascent.

The island's electric buses (IETT lines BA-1, BA-2, BA-3) serve the lower approaches and the island circuit, but they do not reach the monastery summit itself. The final trail section is walk-only, regardless of how you approach the hillside.

The monastery complex at Yüce Tepe includes two church buildings in close proximity. The older small chapel — known as the eski kilise (old church) — is a modest two-storey, tiled-roof structure that predates the main building. The 1905 stone church alongside it is the centrepiece of the site. Together they give the hilltop an intimate, layered character that rewards unhurried exploration.

Inside the 1905 church, visitors find a traditional Orthodox interior: a carved wooden iconostasis separating the nave from the sanctuary, icon panels of Saint George in the warrior-saint tradition, candle stands and oil lamps. The atmosphere is quiet and reverent. Photography is generally tolerated outside and in the monastery grounds; inside the church, discretion is essential — no flash, no posing in front of the iconostasis or altar, and particular care when services are in progress or when pilgrims are at prayer.

Adjacent to the church buildings, the site includes an ayazma — a holy spring associated with Orthodox pilgrimage practice across Turkey and Greece. Visiting the spring and drinking from it is part of the devotional experience for many pilgrims. The spring's exact location within the complex should be confirmed on arrival, as access arrangements can vary.

The summit terrace is the monastery's other major draw. On a clear day, the panorama takes in the full chain of the Princes' Islands, the Asian shore of Istanbul and the open Marmara horizon. On the clearest mornings in winter and early spring, the Bithynian mountains of Bursa's hinterland are visible across the water. This is one of the finest viewpoints accessible from Istanbul.

The timing of a visit to Aya Yorgi shapes the experience considerably. Spring (April to early June) and autumn (September and October) offer the best overall conditions — mild temperatures, manageable visitor numbers and the island's pine hillsides at their most pleasant. Summer (July–August) brings excellent weather but significant congestion on weekends, long ferry queues at Kabataş and an uncomfortable afternoon climb in the heat. Winter is peaceful but ferry schedules reduce and some island facilities close seasonally.

The two Orthodox feast days — April 23 (Saint George's Day) and September 24 (Saint Thekla's Day) — transform Aya Yorgi into something extraordinary. Thousands of pilgrims from multiple religious backgrounds make the silent ascent together, some barefoot, in an atmosphere that is genuinely moving and difficult to replicate on an ordinary day. The practical cost is real: April 23 coincides with Turkey's national holiday, so plan on an early start — the first sailings from Kabataş or Bostancı at around 06:00–07:30 — and accept that island accommodation will be fully booked by the time you think to reserve it.

Büyükada rewards a full day's exploration, and Aya Yorgi works best as the centrepiece of a broader island itinerary. These are the attractions most easily combined with the monastery visit — all reachable by the island's electric bus network, bicycle or on foot.

For a broader introduction to the island group — including Heybeliada, Burgazada and Kınalıada — see our Princes' Islands guide. For organised day-trip options to the islands, see our Princes' Islands tours guide.

Visiting Aya Yorgi itself costs nothing — entry is free and the ascent path is open. The main costs for a Büyükada day trip relate to ferry fares and island transport. USD equivalents below use an approximate rate of 37–38 TRY per USD as of mid-2026; Turkish lira exchange rates fluctuate significantly and all figures should be treated as orientation only. Always check the ferry operator's current schedule and pricing before you travel.

This itinerary works best on a weekday in May, June, September or October — mild temperatures, manageable crowds, and the island's coastal light at its finest. In July and August, move everything 30–60 minutes earlier to avoid the midday heat on the Yüce Tepe trail.

06:30–07:30 — Take an early ferry from Kabataş (European side) or Bostancı (Asian side). Morning sailings deliver you to Büyükada before the crowds and the midday heat. The light on the Marmara at this hour is excellent for photography from the ferry deck.

08:30–09:00 — Arrive at Büyükada pier. Walk the 5–10 minutes to the meydan. If you plan to cycle the island later, collect a bicycle here from one of the rental shops near the pier.

09:00–09:30 — Begin the ascent toward Yüce Tepe. The path is signposted from behind the meydan. Take water; the wish-ribbon trees start midway up and the views open significantly as you approach the summit.

09:30–11:00 — Explore the monastery complex: the older chapel, the 1905 stone church, the ayazma, and the summit viewpoint. Take your time — this is a living religious site and rewards unhurried attention.

11:30–13:00 — Descend to the meydan and lunch at one of the harbour-side restaurants. Fresh fish is a reliable choice; old-style island patisseries are worth a stop for morning tea or a mid-morning coffee.

13:30–14:30 — Visit the Adalar Museum or walk the island's historic street grid, noting the late Ottoman wooden mansions that appear at every corner. A brief detour to the exterior of the Prinkipo Orphanage gives a sense of its extraordinary scale.

14:30–17:00 — Electric bus or bicycle to Dilburnu Nature Park for an afternoon walk, sea views and, if the day is warm, a swim at Eskibağ Beach.

17:30–19:30 — Return to the ferry pier for an evening sailing to Kabataş or Bostancı. The light across the Marmara in the late afternoon, with the Istanbul skyline to the north, is a fitting close to the day.

The only scheduled public route to Büyükada is by ferry. No road bridge connects the Princes' Islands to the mainland, and private motorboats are not a standard tourist service.

Şehir Hatları (Istanbul City Lines) operates the principal services. From the European side, the main departure pier is Kabataş — reached via the T1 tram (Kabataş stop) or the Beyoğlu funicular. Beşiktaş is a secondary European option. From the Asian side, Bostancı is the faster choice — approximately 50–60 minutes compared to 1 hour 45 minutes from Kabataş, which stops at Kınalıada, Burgazada and Heybeliada on the way.

Istanbulkart gives the discounted public rate on all Şehir Hatları services and is the recommended payment method. A single fare from Kabataş was approximately 137 TRY (full rate, Istanbulkart, mid-2026) — check sehirhatlari.istanbul before travelling, as fares are updated periodically and the lira rate shifts. Private fast ferries (IDO / Dentur) also operate in summer from Kabataş at higher fares.

For visitors staying in Sultanahmet, Beyoğlu or near either Istanbul airport, a private transfer to the Kabataş or Bostancı pier for an early ferry simplifies a day that depends on catching a specific sailing — especially useful for families with luggage or guests who want to avoid navigating public transport in the morning rush. See our car with driver service for private pier transfers across Istanbul, or our Asian Istanbul guide for context on the Bostancı area and the Asian ferry network.

Sunday services: Orthodox religious services take place on Sunday mornings at approximately 09:00–12:15. Tourist access to the church interior is restricted during this period. If visiting on a Sunday, arrive before 09:00 or after 12:30 — or simply sit at the summit viewpoint during the service and enter afterwards.

Opening hours — not confirmed: Published visitor hours vary significantly across sources, with figures of 08:00–16:00, 08:00–18:00 and 10:00–16:00 all reported in recent years. No single authoritative 2026 schedule was available at the time of writing. If your visit window is time-sensitive, verify locally on arrival or contact the Ecumenical Patriarchate in Istanbul.

Accessibility: The trail to Yüce Tepe is not accessible by wheelchair, mobility scooter or pushchair. The island's electric buses serve lower approaches but do not extend to the monastery summit. Anyone with significant mobility limitations should be aware that the Aya Yorgi experience requires the ability to walk a steep, unpaved kilometre uphill.

Summer heat: The trail is largely exposed. In July and August, midday temperatures on the hillside frequently exceed 35°C. Begin the ascent before 09:30 or after 17:00, carry at least one litre of water per person and use sun protection. The descent in full afternoon sun is uncomfortable and can be particularly hard on young children and older visitors.

April 23 — the crowded feast day: Saint George's Day coincides with Turkey's national public holiday. Ferries fill quickly; the island reaches saturation by late morning; the ascent trail moves slowly with thousands of pilgrims. Take the earliest possible sailing, plan to leave before the afternoon return surge, and note that island accommodation books out entirely on this date — reserve months in advance if you are planning to stay overnight.

Photography etiquette: Outside and in the grounds, photography is generally accepted. Inside the church, always be discreet — no flash, no positioning in front of the iconostasis or altar, no photography during services. On feast days when the interior is crowded with pilgrims in prayer, it is better to observe than to photograph.

The Prinkipo Orphanage: In June 2026, an agreement was signed to restore the building and convert it into a luxury hotel. As of that date, it is closed and cannot be entered. The exterior is visible from outside the fence and from the ferry approaching the island — both offer a clear sense of its extraordinary scale. Do not attempt to enter the grounds.