The capital of Cambodia is named after the hill on which this ancient temple complex stands.

Khmer Rouge's high security prison.

5,000 skulls in memorial to those killed by the Khmer Rouge.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

A small 12th-century temple surrounded by waters believed to have curative properties.

A battle between nature and architecture in the Cambodian jungle.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

The Guardian of Tallinn.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Only a fragment of this 15th-century Dance of Death survives today.

A forest park outside Tallinn full of architectural and artistic curiosities.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

A rare octagonal brick beacon on an isolated island in the Baltic.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

An abstract monument to a symphonic composer.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.

The Swedish flag over this small naval fort signals that the nation is at peace.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.