St Vladimir's Cathedral in the centre of Sevastopol is a Neo-Byzantine domed church built in the 1850s–80s, serving partly as a place of worship and partly as a mausoleum for the naval commanders who died defending the city during the Crimean War. The four admirals — Lazarev, Kornilov, Nakhimov, and Istomin — are buried in the crypt below.
The cathedral's austere exterior belies a richly decorated interior, with marble floors, detailed mosaics, and the sombre crypts below. The building stands prominently on a hill in the city centre and is one of the architectural anchors of the upper town. It was damaged during World War II and carefully restored afterward. Not to be confused with the similarly named cathedral at Chersonesus, which is a separate building outside the city centre.