In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

Located inside Hoge Veluwe National Park, this museum began as the private collection of a prominent female art collector.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

A winding, blood-red tunnel of hardened lava navigable by foot.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

Climb right into the heart of this colorful Iceland volcano.

The most powerful waterfall in all of Europe.

Walk in the footsteps of the gods and straddle two tectonic plates.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Rising from the sea like a stone monster.

Staves, storm-calling, and of course, necropants.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

For a few short weeks in spring, this hiking path becomes a daffodil paradise.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.