Hagia Sophia, was built in 537 on the order of the Roman Emperor Justinian, the most majestic monument of the Byzantine period, one of the symbols of Istanbul,

Blue Mosque, was built on the order of Sultan Ahmet in 1617, the name owes to the colors of the 20,000 tiles built in Nicaea where the first Ecumenical Council was held,

Hippodrome, built in lll. sec. by the Roman emperor Septimius Severus for horse racing, today it is a square where there are some ancient monuments.

Topkapı Palace, built by Sultan Mehmet the Conqueror in 1478. For 4 centuries it was the government center of the Ottoman Empire,

Basilica Cistern, one of the most evocative buildings of the Byzantine period, was built on the order of the Roman Emperor Justinian. It served as a water supply for centuries,

Grand Bazaar, the largest and oldest covered market in the world, still active with 75 streets, 22 entrances and about 3000 shops that attracts millions of travelers every year and is also considered one of the first shopping centers in the world.