Golden Fort - Jaisalmer

the Golden Fort, built in 1159, is a UNESCO World Heritage site. It is the only fortress in India still inhabited by people - 4,000+ owners of shops/restaurants/small hotels. UNESCO has restored/maintained the fortress walls & offered to reimburse relocation of inhabitants - but they have refused. Because they have refused, tourists are discouraged from buying anything within the fortress walls.
Middle pic is the fort's main gate - which defenders would leave open when invaders approached. Bottom pic is 2nd fortress gate. They would close both the main & 2nd gates trapping invaders between gates where they would be "dispatched". Note stone cannon balls on walls in front of 2nd gate. There are 2 more gates beyond the 2nd gate - total = 4 gates!