Mostar, the biggest city in Herzegovina, is a unique destination with a long history. That is evidenced by numerous sites from the Neolithic, Copper, Bronze and Iron Ages. The most significat is the Old Town, the historical city district that boasts the Old Bridge and many other attractions from its rich history. Among them, Kriva Cuprija and a turret around the Old Bridge stand out. Aside from the Old Bridge, there are three other bridges in the urban area of the city: Harbour Bridge, Customs Bridge and Bridge Musala. Mostar is a home to the most beautiful and the oldest mosque in Herzegovina – the Karađozbegova mosque that was built in 1557 by the Turkhis architect Koca Mimar Sinan. On the central market, the Spanish square, is Mostar's high school, which is considered one of the most beautiful buildings from the Austro-Hungarian period. Favourite promenade of its residents is Mostar’s city park Zrinjevac, which was completely renovated in 2007. It should be noted that the aforementioned sites are only a small part of the wide range of Mostar’s culture and tradition.