This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

Research station devoted to mysterious floating lights seen in a Norwegian valley.

Mound of stones marking the burial site of the world's most famous orca.

This World War II airfield enjoys a second life as a public park.

A naturally occurring tunnel in this Nordic mountain makes it look like it's been shot.

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

The world's northernmost ice hotel.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

A 2,000-year-old wine press hidden in an overlooked park in Tel Aviv.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Old Danish castle immortalized in Shakespeare's Hamlet.

Copenhagen's celebrated theme park and gardens.

Visit the home of Sweden's beloved fictional character, Pippi Longstocking.

Space-age monument to an early 20th-century uprising.

This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.