Krasnoperekopsky City District is one of the oldest parts in Yaroslavl. Before the 1917 Revolution, it was home to the bulk of Yaroslavl's industry, and a good deal of industry remains today. Krasnoperekopsky City District is divided into two microdistricts, one of which is Neftestroy, an up-and-coming region, named for its proximity to Yaroslavl's oil refinery. Neftestroy is home to the newly built hockey arena, and there were plans to build an indoor football stadium there by the millennial anniversary of Yaroslavl's founding in 2010. On the other side of the railway tracks that run through Krasnopereposky City District lies the Perekop proper. Today, Perekop is known as one of the most dangerous areas of Yaroslavl. It consists largely of run-down, pre-Soviet izbas and decaying factory buildings. There are plans to pump life into this depressed district, but at the time of writing, it remains extremely impoverished and dangerous. Much of Yaroslavl's mafia grew out of Perekop. Perekop has some of Yaroslavl's most notable churches, including the Church of Saint John the Baptist, which is located next to a paint factory on the Kotorosl embankment; and Peter and Paul's Cathedral, a Protestant-style Orthodox church.