The Opera and Ballet House which is the largest opera house in Russia. There's also the exact geographical centre of former Soviet Union just south of Lenin Square, marked by the Chapel of St. Nicholas, originally built in 1915 to commemorate 300 years of Romanov rule and rebuilt in 1993. In winter residents build an ice town on the Ob River, and in summer you can go to the beach. Near the city centre on Krasny Prospekt, you can also see some excellent work in the Novosibirsk Art Museum and Local Studies Museum. As in every Russian city, there are multiple monuments to heroes of the Great Patriotic War (WWII), including an eternal flame guarded at special ceremonies by youths with replica Kalashnikovs. Akademgorodok, built in the 1950s as a mecca for academics but suffering from neglect in the post-Soviet years, is still pleasant as a day trip. This formerly elite institution is located about 30 km south of the city and features several museums and nice, tree-lined streets.