fear of heights or being close to tall buildings
Batophobia is the fear of high buildings.
batophobia An abnormal fear of passing or walking close to high objects; such as, high buildings or tall trees; dread of heights. A compound of Greek batos, `passable”, a verbal adjective of bainein, `to go”. The association of Greek batos with `height” is apparently a result of a connection of this word with the second element in acrobat ...