 Other federal monuments include the Nilova Pustyn monastery, located on an island on Lake Seliger, the Novyye Yeltsy Estate in the selo of Novyye Yeltsy, as well as a number of churches in the villages of the district and several acheological sites.Ostashkovsky District Museum was founded in 1889 and is located in Ostashkov.It has displays on local history and ethnography.