About the location (from Wiki):
The Drottningholm Palace (Swedish: Drottningholms slott) is the private residence of the Swedish royal family. It is located in Drottningholm. It is built on the island Lovön (in Ekerö Municipality of Stockholm County), and is one of Sweden’s Royal Palaces. It was originally built in the late 16th century. It served as a residence of the Swedish royal court for most of the 18th century. Apart from being the private residence of the Swedish royal family, the palace is a popular tourist attraction.

The name Drottningholm (literally meaning “Queen’s islet”) came from the original renaissance building designed by Willem Boy, a stone palace built by John III of Sweden in 1580 for his queen, Catherine Jagellon. This palace was preceded by a royal mansion called Torvesund. The current Swedish royal family have used Drottningholm as their primary residence since 1981. Since then, the Palace has also been guarded by the Swedish Military in the same fashion as Stockholm Palace.

Movies shot at this location:
Dil Jo Bhi Kahey song from Dil Jo Bhi Kahey