Twisted buildings adorn the banks of the Rhine river.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

A spiral staircase twists to the top of this unusual Czech lookout tower.

A corkscrew-shaped barn in Ireland.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

One of the world's largest pianos is displayed in the workshop of the man who built it as a teenager.

Free candle-lit art gallery, accompanied by a live piano score.

Known for the tunnel that leads visitors to the water.

Anyone wanting to know what a dwarven mine sounds like need only visit the tunnels of this New Zealand artillery compound.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

The stunning interior of this Gothic church is covered in ornate gold details.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.