One of Kaluga's most famous sights is the Stone Bridge which connects Ulitsa Pushkina with Ulitsa Bazhenova across the Berezuisky Ravine. Amazingly this Roman-style viaduct was first opened in 1777 and although it was closed for restoration between 2009 and 2010, it is still operational despite the massive increase in traffic it has seen. At almost 160 metres wide, 20 metres tall and comprising 15 large arches, the bridge is the largest stone viaduct in Russia.