Once standing on solid ground, this slender beacon is a victim of the very shoreline it was charged with announcing.

The gutted remains of this Estonian mansion are a monument to a tragic love.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

A muddy alien landscape that is home to rare species of exotic plants.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

A giant portrait of an ancient king looms over the river.

No one knows who built this strange cave of worship or exactly why.

A futuristic, brutalist masterpiece that is also strangely prison-like.

Through the colossal entrance to this cave you'll find limestone tubs and an underground waterfall.

Tucked in an urban forest, this restaurant specializes in homemade, healing rakijas.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

Pop culture has helped to keep this iconic British building from being destroyed.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

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

Walk 2,300 feet above the ground on the "Troll's Tongue."

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.