To provide an indoor installation shelter which can be installed in the room of a dwelling unit etc., and into which a dweller can escape on the occurrence of an earthquake etc. so as to guard himself/herself.

The indoor installation shelter comprises: an evacuation room 2 which is equipped with a top plate 4, a base plate 5, and a plurality of columns 6 etc. provided around each of the top plate 4 and the base plate 5, between the top plate 4 and the base plate 5; and base-isolating devices 3 etc. which are provided below the base plate 5 of the evacuation room 2.