The Steel Hut, along with the Silver Hut, make up the Toyo Ito Museum of Architecture.
Unsurprisingly it was designed by architect Toyo Ito.
It is located near the small fishing village of Munakata on Omishima in the Seto Inland Sea between Hiroshima and Shikoku.
On the website for the museum you can download the plan of its design and construct one yourself out of paper........ here
The building consists of four different polyhedrons and is constructed in steel.
Construction finished and the museum opened in 2011.