This Danish park has celebrated the American independence day since 1912.

An old limestone mine transformed into a beautiful and unusual sculpture museum.

Deep in the forest of northern Denmark, this secret underground bunker was built at the height of the Cold War.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Denmark’s never-ending bridge.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

This enormous aluminum figure in Denmark lying in a plunged position, echoes the global debate on canceled historical statues.

A symbol for the opposition to nuclear power around the world.

A public display of random paleontology.

A walkable map of the world, made from soil and stone by one man.

An Elvis superfan built Denmark's own version of Graceland.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.