Vilnius is the capital of Lithuania, and its largest city. It is located in the southeast part of Lithuania, at the confluence of the rivers Neris and Vilnia. It is the second biggest city of the Baltic States. The town was a political centre of the Grand Duchy of Lithuania from the 13th to the end of the 18th century and it has had a profound influence on the cultural and architectural development of much of Eastern Europe. Vilnius has long been called Little Rome, North Athens or North Jerusalem. Despite invasions and partial destruction, it has preserved an impressive complex of Gothic, Renaissance, Baroque and classical buildings as well as its medieval layout and natural setting. Included on the UNESCO World Heritage List, Old Town contains almost two thousand medieval, gothic, renaissance, and baroque buildings. Other popular attractions include the KGB Museum, located in a former Soviet prison, and the 13th century Higher Castle, which affords a glorious view of the city centre.