Immerse yourself in the history of Istanbul as you visit some of the most interesting sites of the city.  Begin your tour by visiting the Million Stone, built in the early 4th century AD, which is considered the origin of all roads leading to the European cities of the Byzantine Empire. Continue your walk to the German Fountain - a gift from the German Emperor Wilhelm II to Sultan Abdulhamid II from 1898. Next, see the Palace of Ibrahim Pasha, an Ottoman imperial court residence built in the 16th century. Admire the unique building and learn about its history. Then, visit the Hippodrome, which was the center of political and sporting life in Istanbul during the reign of the Roman and Ottoman Empire.  The tour ends in the courtyards of the Blue Mosque. The tour guide will inform you about all the important highlights inside the Blue Mosque. Afterward, you can discover the UNESCO World Heritage site, built-in 1616, with its 6 minarets and beautiful decor. Explore the monument at your own pace and stay inside as long as you want. Admission to the Blue Mosque is free.