Spiral staircase and its reflection outside Perlan, a modern building housing the Saga Museum, Reykjavik, Iceland, Polar Regions

View from the Pearl (Perlan) facing north east towards the Hallgrimskirkja (Hallgrimsskirkja) which overlooks the city centre, Reykjavik, Iceland

Spiral staircase outside Perlan, a modern building housing the Saga Museum, Reykjavik, Iceland, Polar Regions

View of central Reykjavik from Perlan showing the modern church of Hallgrimskirkja, Reykjavik, Iceland, Polar Regions

View from the Perlan of colourful houses, commercial buildings, churches and harbour of the city, with mountains beyond, Reykjavik, Iceland, Polar Regions

View from the Perlan of colourful houses, commercial buildings, churches and harbour of the city, with mountains beyond, Reykjavik, Iceland, Polar Regions

City centre and Hallgrimskirkja on skyline from Perlan viewing deck, Reykjavik, Iceland, Polar Regions

The Perlan Building and Saga Museum, hot water storage tanks that supply Reykjavik have become a tourist attraction with views over the city, Reykjavik, Iceland, Polar Regions

Exterior view of statues in front of The Perlan Museum, in Reykjavik, Iceland, Polar Regions

Exterior view of The Perlan Museum, converted hot water tanks in Reykjavik, Iceland, Polar Regions

Exterior view of The Perlan Museum, converted hot water tanks in Reykjavik, Iceland, Polar Regions

The Perlan building, designed around five huge water tanks that hold geothermally heated water, Reykjavik, Iceland, Polar Regions

The Perlan building, designed around five huge water tanks that hold geothermally heated water, Reykjavik, Iceland, Polar Regions

Iceland, Reykjavik, The pearl, Huge hot water tank on a hill

Cupola, staircase, La Perla, Reykjavik, Iceland, Europa

Dansleikur, sculpture with dancers by Torbjorg Palsdottir at the Perlan building, Reykjavik, Iceland, Europe

Perlan, central hot water tank and seat of the Saga Museum, Reykjavik's landmark, Reykjavik, Iceland, Europe

Perlan building, hot water storage tanks, Reykjavik, Iceland, Europe