PERLAN IN ICELAND.

Perlan (Icelandic pronunciation: [ˈpʰɛrtlan]; English: The Pearl) is a natural history museum in Reykjavík, Iceland. It is situated on the top of Öskjuhlíð hill. It was initially only a cluster of hot water tanks, but on June 21, 1991, the building was opened to the public. The building consists of a glass dome resting on top of six district heating tanks. Four of them are still in use, one hosts an ice cave, and one has been turned into a planetarium.