 The remains of a Bronze Age cyclopean fortress are found at the northeastern edge of the town, while 2 other medieval fortresses are found at the west and the northeast of the town.The 7th-century Saint Gregory Church of Sisavan (also known as Surp Hovhannes) is among the major historic landmarks of the town, built in 670-689.The Sisian History Museum named after Nicholas Adontz is operating since its inauguration in 1989, covering the history of Sisian and the surrounding region.