Paldiski Soviet Nuclear Training Centre

The Paldiski Soviet Nuclear Training Centre is in the town of Paldiski on the Pakri Peninsula in Lääne-Harju Parish, Harju County, Estonia, around 50 kilometres west of Tallinn. Paldiski has a long military history, beginning with Peter the Great's naval port and fortress project in the early 18th century, and it was again a military site after the Soviet occupation. In the late 1960s the Soviet Navy established a training centre here for nuclear submarine crews, built around two land-based reactor prototypes that replicated the propulsion systems of Soviet submarines. The town was a closed military settlement with a large population of servicemen and their families, and access by outsiders was restricted. The Soviet Navy used the facility until the early 1990s. After Estonia regained independence in 1991, negotiations led to the withdrawal of Russian troops in 1994, a milestone in the post-Soviet transition. The reactors were shut down, and the nuclear fuel was removed under international arrangements, with the remaining reactor sections sealed and later placed in a storage facility. The former training buildings are not open as a standard attraction, and the former submarine centre remains closed to the public. Visitors can see traces of the Soviet era in the town, including Soviet-era apartment blocks and military structures, and a small exhibition at an entrance building may be visited by arrangement through the local tourism office. The wider area also holds the Pakri lighthouse and peninsula cliffs, as well as older fortifications, so Paldiski is often explored as a day trip alongside Padise Abbey and Klooga. Because access to the restricted areas is limited, visitors should respect signage and check local information before travelling.