Alexeevskiy Ravelin
The Alexeevskiy Ravelin is an outer fortification at the western end of Hare Island, built by the military engineer V.I. Minikh 1733-1740. Symmetrical with the Ioannovskiy Ravelin at the opposite end of the island, the Alexeevskiy Ravelin was home to a more sinister side of the Peter and Paul Fortress, with a wooden prison constructed within the fortifications in 1769, to be replaced in 1797 by a stone version known as the Secret House. Among the inmates were Nikolay Chernyshevsky and Fyodor Dostoevsky. The building was destroyed in 1893, and replaced by a building housing the archive of the Ministry of War.