Which European capital city stands on fourteen islands?

Stockholm is the capital of Sweden and the most populous city in the Nordic countries; 942,370 people live in the municipality, approximately 1.5 million in the urban area, and 2.3 million in the metropolitan area. The city stretches across fourteen islands where Lake Mälaren flows into the Baltic Sea. Just outside the city and along the coast is the island chain of the Stockholm archipelago. The area has been settled since the Stone Age, in the 6th millennium BC, and was founded as a city in 1252 by Swedish statesman Birger Jarl. It is also the capital of Stockholm County.

Stockholm is the seat of the Swedish government and most of its agencies, including the highest courts in the judiciary, and the official residencies of the Swedish monarch and the Prime Minister. The government has its seat in the Rosenbad building, the Riksdag (Swedish parliament) is seated in the Parliament House, and the Prime Minister's residence is adjacent at the Sager House. The Stockholm Palace is the official residence and principal workplace of the Swedish monarch, while the Drottningholm Palace, a World Heritage Site on the outskirts of Stockholm, serves as the Royal Family's private residence.