The Basilica of Hagia Sophia (Holy Wisdom), now called the Ayasofya Museum, is unquestionably one of the finest buildings of all time. Built by Constantine the Great and reconstructed by Justinian in the 6th century, its immense dome rises 55 meters above the ground and its diameter spans 31 meters. Linger here to admire the building's majestic serenity as well as the fine Byzantine mosaics. (Open every day except Monday). The Archeological Mu...

Across from Hagia Sophia stands the supremely elegant Imperial Sultanahmet Mosque with six minarets. Built between 1609 and 1616 by the architect Mehmet, the building is more familiarly known as the Blue Mosque because of its magnificent interior paneling of blue and white Iznik tiles. During the summer months an evening light and sound show both entertain and inform visitors. The cascading domes and four slender minarets of the Imperial Süle...