As the largest city in Turkey, Istanbul is a sprawling metropolis that is best explored with a car rental, especially for visitors that want to enjoy everything the city has to offer. Enterprise Rent-A-Car has a number of car rental branches throughout the city in key locations. They have one branch in the downtown area of Taksim, as well as another in Kadiköy, both are centrally positioned and easy to find. Bridging Europe and Asia, Istanbul is full of history that dates back to pre-Roman times. The city has been fought over and renamed many times over. It still bears the marks of all the many different influences that have come and gone. Now a cosmopolitan and modern city, Istanbul has a well-maintained road network with a series of tunnels and bridges that traverse the Bosphorus, a channel of water that splits the city in two. Fine examples of Byzantine architecture can be found in Istanbul, as well as plenty of Art Nouveau housing, which became more popular in the twentieth century.