Kaliningrad is a large city in Russia located in the Kaliningrad region. It is the second city by population after St. Petersburg. There are museums (the museum of amber, historical and art museum, the World Ocean museum, Art gallery, the museum of fortification etc.), theaters, large libraries (in particular, fragments of medieval book meeting — Vallenrodt's library), a zoo, a botanical garden are located in Kaliningrad. The cathedral in style of a brick gothic style is located in the downtown.