During the renovation of this bas-relief, the constructors added one unusual element.

This antique thermometer honors the creator of the first universal temperature scale.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Copenhagen's celebrated theme park and gardens.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Stockholm's tiniest statue is of a small boy looking at the Moon.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

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.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

Home to three historic ships from the age of Vikings.

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

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This unusual lava tube spouts seawater during high surf.

This black shoreline is made up of exploded lava particles.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

A trading post in the North Pole where children send letters.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.