As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

These large stone piles are ancient burial sites.

Crawling into this primordial cave may feel disconcertingly familiar.

These lakeside pictographs were some of the first pieces of prehistoric artwork found in Finland.

On a small island, a replica of a Finnish village from the Iron Age.

This restaurant combines two Finnish traditions in one place: warm-weather relaxation and outdoor carpet-cleaning.

One of the oldest structures in Helsinki is this burrow grave that dates back to the Bronze Age.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

This supermarket offers shoppers a window into the past alongside their groceries.

Experience what life was like in Ireland during the Viking and medieval ages.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

The U.K.'s first underground railway line is now a lively thoroughfare for runners and cyclists.

Site of the largest impact event to occur over land in Earth's recorded history.

A remote forest of stone pillars along the Lena river.

Five mile wide circular ring of rock in the Russian Far East is a curious geological oddity.

America's smallest "national forest" has only 33 trees.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

This igloo-shaped landmark in Iqaluit serves as the seat of the Diocese of the Arctic.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

A modern version of the stone cairns built by the Inuit.

Locals believe the purity of this huge, untouched Arctic lake could be the salvation of human civilization.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.