This spire on an Austrian mountain is wrapped around a long spiral slide and has the world's tallest wooden observation deck.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

A seaside town with no sea in sight.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

The only known mosaic depicting the Greek god of sleep, Hypnos.

A tiny church on a man-made island in the Adriatic.

The only medieval bridge in Britain with its defensive tower still in tact.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A public urinal so pretty, it was declared a national monument.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

During the renovation of this bas-relief, the constructors added one unusual element.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

Modern art commemorates one of the first military actions of World War II.

This antique thermometer honors the creator of the first universal temperature scale.

This no man's land slicing through the island is strewn with abandoned relics of another time.

The largest caravanserai in Cyprus also includes amazing examples of Ottoman architecture.

A unique art center and shop just below a United Nations Checkpoint in central Nicosia.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

The ruins of a fairytale castle with a tumultuous history stand high atop the mountains.