An unassuming rod in the Netherlands was once the old standard unit of length for the entire Dutch empire.

A delightful but little-known public observatory and planetarium in Munich.

This red London phone booth once stood in front of Buckingham Palace and was used by the queen.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

These crevices cut into the mountains collect the island’s main source of precious freshwater.

A rocky face gazes out over an enormous volcanic crater.

The largest salt farm in the Canary Islands is located at the foot of an active volcano.

A detailed 1:32 scale model of Scandinavia's largest telescope.

In the Netherlands, one of the world's largest private car collections can be found.

These wooden balconies that are both decorative and functional.

Legend has it that this large rock maze in Sweden was created as punishment by the daughter of a wealthy captain.

Known locally as the Jungfrutornet, this Medieval tower hides a dark legend.

The world's largest private telescope collection hides in a secret wing of a Dutch auto museum.

A nuclear reactor created for Eisenhower's "Atoms for Peace" campaign is now used for research at a Dutch university.

A surprisingly detailed model of one of the most powerful telescopes in the world.

Once the world's biggest telescope, it was later used as a coat hanger by a famous Dutch astronomer.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.