Wroclaw is a city in western Poland on the Oder River. He is known for his Market Square with fancy houses and a modern fountain. Here you can also see the Gothic Town Hall with a large astronomical clock. Not far from it is the museum "Raclawice Panorama" with a huge picture depicting an episode of the national liberation uprising of 1794. On the other side of the river is the Century Hall sports and entertainment complex with a giant dome and a high spire. The population of the city is 630,000 people.