IIRC with real people we use character tag type, but it isn't clear what the case should be for real locations. A brief survey shows:
Many are general: easter_island, eiffel_tower, leaning_tower_of_pisa, mont_st-michel, new_york_city, tokyo_(city), tokyo_tower.
A couple are characters: empire_state_building, chrysler_building.
Strangely, tokyo_big_sight is a copyright.
(This list is by no means comprehensive.)
General or character both seem to make sense.
Updated by Shinjidude