Further Lovecraftian places that really exist:
Eye of Africa (the Richat Structure), Mauritania.
‘Sentinels of the Arctic’ (wind/snow formations, Finnish Lapland) — picture by Niccola Bonfadini.
Entrance to the Borgund Stave Church, Norway — picture by Lightbender.
Catholic convent catacombs, Lima in Peru.
Basalt cave entrance, Akun Island — picture by Steve Hillebrand, U.S. Fish and Wildlife Service.
Stephen Whitney crypt entrance, Greenwood Cemetery (Lovecraft visited this cemetery while in New York).