What can you see in 3 days in Istanbul -Turkey

We spent 3 days in Istanbul, Turkey, and visited many different places. The places that have been visited in 3 days are as follows: Galata Tower: 0:08 Istiklal caddesi Street: 0:47 Street Music: 02:15 Beyazit Mosque 3:16 The Blue Mosque: 4:45 Hagia Sophia: 5:05 Spice Bazaar: 8:05 Grand Bazaar: 9:43 Old Bazaar: 10:36 Bosphorus Cruise Tours: 10:54 Dolmabahçe Palace: 12:10