Chalcedon (Khalkedon) is the ancient name for Kadiköy, a vibrant and historic district on the Asian side of Istanbul. Known in antiquity as the "City of the Blind", it predates the founding of Byzantium (the European side) and remains one of the most culturally significant areas in the city.
Chalcedon was founded as a Megarian colony in 685 BC, about 17 years before Byzantium. According to legend, the Oracle of Delphi called the founders of Chalcedon "blind" because they overlooked the superior strategic location of the Seraglio Point (Topkapi Palace area) on the opposite side of the Bosphorus, choosing the Asian side instead. In 451 AD, the city hosted one of the most important events in Christian history, the Fourth Ecumenical Council, which defined the nature of Christ and established the "Chalcedonian Definition". While much of ancient Chalcedon is buried under the modern city, archaeological excavations at the Haydarpasa Train Station have recently uncovered significant Roman and Byzantine remains, including villas and a harbor.
Today, Kadiköy has transformed from a quiet residential suburb into Istanbul's most prominent cultural, artistic, and entertainment hub on the Asian side. The Kadife Street (often called "Bars Street") and the surrounding alleys are packed with cafes, theaters, and live music venues. The Bahariye street is a bustling pedestrian street famous for its Nostalgic Tram (similar to the one in Taksim) and the Bull Statue (Altiyol Boga Heykeli), which serves as the district's most popular meeting point. Moda is a trendy, green neighborhood known for its historic tea gardens, seaside parks, and the famous Baris Manco Museum. It is one of the most sought-after places to live and walk in Istanbul. The Fish Market (Balik Pazari) is a sensory delight where you can find fresh seafood, spices, Turkish delight, and some of the city's best traditional restaurants. Haydarpasa Railway Station is a magnificent neo-classical building that served as the terminus for the Baghdad and Hejaz railways. Kadiköy Ferry Terminal is one of the busiest in the world, offering iconic 20-minute boat rides across the Bosphorus to Besiktas, Eminönü, and Karaköy.