Istanbul

For more than fifteen centuries, Istanbul has stood as the axis upon which empires turned. Founded as Byzantium by Greek colonists around 657 BC, rechristened Constantinople when Emperor Constantine made it the capital of the Eastern Roman Empire in 330 AD, and finally claimed by Sultan Mehmed II in 1453 for the Ottoman dynasty, the city is layered with the sediment of civilizations in a manner unmatched anywhere on earth. It is the only metropolis that physically straddles two continents, its European and Asian halves connected by bridges that arc over the shimmering Bosphorus.

What makes Istanbul singular is its refusal to be reduced to a museum piece. The Hagia Sophia's Byzantine mosaics gleam beneath Ottoman calligraphy; contemporary art galleries occupy repurposed Ottoman-era warehouses along the Golden Horn; and in Beyoğlu, Art Nouveau apartment blocks share narrow streets with rooftop cocktail bars whose terraces frame the domes and minarets of the Old City. The Grand Bazaar, with its four thousand shops beneath vaulted ceilings dating to 1461, remains one of the world's oldest and largest covered markets — an intoxicating labyrinth of silks, spices, ceramics, and gold.

No visit is complete without surrendering to Istanbul's culinary depth. Begin mornings with a traditional kahvaltı — a sprawling Turkish breakfast of beyaz peynir, simit, kaymak with honey, sucuklu yumurta, and endless çay — at a waterside café in Karaköy. For lunch, cross to the Asian side for a grilled sea bass at Çiya Sofrası in Kadıköy, a restaurant celebrated for rescuing forgotten Anatolian recipes. In the evening, meander through the streets of Balat for lahmacun and pide, or sample the legendary iskender kebab at a century-old lokanta near the Spice Bazaar.

Day-trip possibilities radiate outward in every direction. A ferry ride of ninety minutes delivers you to the Princes' Islands, a car-free archipelago of Victorian mansions and pine forests in the Sea of Marmara. To the south, the ancient city of Bursa — Ottoman capital before Constantinople — offers thermal baths, the Green Mosque, and İskender kebab at its birthplace, reachable in two hours by fast ferry and bus. The World War I battlefields and memorials of Gallipoli lie roughly four hours away.

Istanbul is among the most frequently visited cruise ports in the Eastern Mediterranean, drawing virtually every major line to its shores. Luxury voyagers arrive aboard Silversea's Silver Moon, Seabourn Ovation, Regent Seven Seas Cruises, Explora Journeys, Ponant, Hapag-Lloyd Cruises, and Windstar Cruises. Premium and mainstream lines including Azamara, Cunard, Holland America Line, Oceania Cruises, Princess Cruises, Norwegian Cruise Line, MSC Cruises, Royal Caribbean, and Virgin Voyages all make regular calls. River cruisers with Scenic River Cruises and Viking explore the broader region, while Star Clippers, Emerald Cruises, Emerald Yacht Cruises, AIDA, and TUI Cruises Mein Schiff round out the impressive roster. The peak season stretches from April through October, with spring and autumn offering the most temperate weather for exploring this endlessly captivating city.