Could you please write in English?
Are you asking what the pyramides are? They're used as skylights for the Metro-station below.
Så er det ændret
This apartment block was in year 2000 moved piece by piece from central Oslo, Wessels Gate 15, to Norsk Folkemuseum as a gift from it's owner, OBOS. All apartments are now open for the public, and shows citylife in Oslo from 1865 until it's move to the museum. Some of the apartments are actual replica of people who lived here.
He rebuilded Oslo after a fire has destroyed the town in 1624 and changed the name to Christiania. In 1877 the town was called Kristiania. Finally in 1925 the town was called Oslo again.