Millesgården is an art museum and a sculpture park in Stockholm, located on the island of Lidingö. It takes around 30 min by public transport from the central station to get there. Opened the whole year round, the place is an oasis of Mediterranean nature and art. Greek sculptures and Italian yards, along with some Swedish architecture elements will make you admire every inch of the territory.
The place was a home to a famous Swedish sculptor Carl Milles and his wife, artist Olga Milles. You can take a look how they lived and where they created their work.
There's always an ongoing exhibition, a restaurant and a shop. An annual pass costs just 250 SEK (25 EUR) which is half the price compared to other museums, for example Skansen. One time visit is 150 SEK (15 EUR).
During my first (and yet the only one) visit to the place I was astonished by exterior design even more than by amount and diversity of sculptures. With those trees like in Italy (I don't know how they are called), with a number of fountains, with sculptures like in ancient Greece... You'll feel yourself like a time traveler :)
Official site: www.millesgarden.se