Grand Ducal Burial Vault, Mausoleum in Peter and Paul Fortress, Saint Petersburg, Russia

The Grand Ducal Burial Vault is a domed mausoleum of pale yellow stone with a grey-green roof, built in the Neo-Baroque style and often mistaken for part of the Peter and Paul Cathedral. Its multi-sided body has pilasters and tall arched windows, and a projecting entrance with a pediment stands on the left. The dome rises on a windowed drum topped by a cupola with a clock face and cross. A covered passageway links it to the cathedral.

The building opened in 1908 to house Romanov family members who were not in the line of rule. Between 1908 and 1916, a total of thirteen imperial relatives were buried within its walls.

The name reflects its purpose as a burial place for Romanov family members and today functions as a museum space open to the public. Visitors can observe the religious decoration with marble surfaces and restored stained glass windows showing scenes of Christ's resurrection.

The site is accessible to visitors and operates as part of the State Museum of Saint Petersburg History with regular guided tours available. A guided visit is recommended to fully appreciate the interior details and religious elements.

The mausoleum was planned to hold as many as sixty tombs, yet only thirteen burials had taken place by the time of the Russian Revolution. The Soviet authorities removed the uniform tombs when they converted the building into a museum of city history; the tombs were later restored.