A reinforced concrete structure, it has an area of roughly 4,940 m2 (53,200 sq ft).

It consists of sixty-two rooms spread over three floors, including a basement level.

[1] It has three main wings: This palace is where the Emperor lives,[2][3] not to be confused with the main palace (宮殿, Kyūden), where various imperial court functions and receptions take place, and where most dinners with foreign heads of state happen.

In accordance with the imperial naming conventions, it was renamed Fukiage Sento Palace (吹上仙洞御所, Fukiage Sentō Gosho) when Emperor Akihito abdicated on 30 April 2019.

When the Emperor resides, it is simply referred to as the Imperial Palace (御所, Gosho).