🇱🇰Sri Lanka, Ambuluvava Tower.
Visiting this tower, you are convinced that the view from it is simply fantastic! But you still need to climb to the very top! The peculiarity of the building is that it is equipped with a spiral staircase. And what is most interesting, the ascent is not inside, but outside the building, and it becomes narrower and narrower as you approach the top!
Although the tower is not a skyscraper, it is contraindicated for people who are afraid of heights, because they will have to climb on foot alone along a narrowing spiral of stairs, an accordion wrapped around it and only on one side fenced with a stone railing to the waist.
https://goo.gl/maps/D4iueNtcQDzRWrRL7