Located in an ideal strategic position straddling the Bosporus strait, Istanbul is both the largest city in Turkey and its economic, cultural and historic centre. . With the help of our Istanbul guided city tours, you will gain an unparalleled insight into both the modern and historic capital of Turkey. Istanbul is renowned for its fascinating mix of architectural styles. From the Roman and Byzantine eras the Basilica Cistern and Hippodrome are outstanding feats of engineering, and the monumental Hagia Sophia has stood the test of time, continuing to wow visitors to this day, while the Süleymaniye Mosque and the Topkapi Palace are amongst the many architectural wonders of the Ottoman Empire. Renaissance Revival, Neoclassical and Art Nouveau buildings seam harmlessly with the ancient and Ottoman styles, contributing to Istanbul’s unique atmosphere.