The pearl

The Perlan aka The Pearl, is a striking building located in Reykjavik, Iceland. The building is built on a hilltop, with a panoramic view of the city and offers various services such as a museum, restaurant and observatory.
The building was originally built in the 1980s as a hot water tank for the city's heating system, but it was later transformed into a tourist attraction. The large domed building houses a permanent exhibition called "Wonders of Iceland", showcasing Iceland's natural wonders. The exhibition features interactive displays and exhibits that provide visitors with an understanding of the country's geology, flora, and fauna.
Perlan also has an observatory located on the top floor, which offers 360-degree views of Reykjavik and its surroundings. The observatory is a popular spot to see the Northern Lights during the winter months.
The building also houses a revolving restaurant, called "Pearl Restaurant", which offers a fine dining experience with panoramic city views. The restaurant serves traditional Icelandic dishes, such as seafood and lamb dishes, as well as international food options.
Perlan also serves as a convention center and it hosts various events throughout the year, such as conferences, concerts, and exhibitions. The building also houses a gift shop offering a variety of Iceland-related products, such as books, clothing and souvenirs.