The world's longest covered bridge is a quaint and incredible wooden tunnel.

A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.

Cascading outward, this waterfall creates the appearance of a flowing veil.

This country market harbors goats on its roof.

Stockholm's narrowest alley is barely over two feet wide.

Steadily reminding Czechia of its past.

Monument to a suicide protesting the Soviet invasion.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

The last permanent exhibit dedicated to the Soviet leader.

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

An impressive museum dedicated to the resource that made the Scandinavian country rich.

The great polar explorer is remembered in this far northern town, where he embarked on his final expedition.

A former factory now pays tribute to a local industry fueled by sardines.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Home to three historic ships from the age of Vikings.

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

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

Preserved "bog person" that is over 2,000 years old.

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

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.