The grounds and buildings of an old wood pulp mill have been transformed into an innovative art park and museum.

A stunning architectural yet functional feat, towering over Oslo.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

The only castle in North America to ever house European sovereigns.

66,000 pieces of art, donated by one of the world's richest men.

Frida Kahlo's childhood home, now a museum of her life and works.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

Countless stories attempt to explain Poland's mysterious J-shaped trees.