Masuleh, Gilan Province, Iran (Heaven on earth) Masooleh is a village in the north of Iran in the Gilan Province. Settlements in this area date back to over one thousand years ago. The architecture of this village is unique. One of the most fascinating features of Masooleh is the structure of its interconnected buildings. The village was constructed with a sewage system and windows with double glazing from the beginning. The houses are earthquake-proof and are all connected through underground t