Ship-sized kinetic sculptural fantasy.

An unusual round church in London with a Templar past.

A collection of machines designed to break things for science.

For six months of the year, three giant mirrors direct a pool of sunshine onto this otherwise occluded town.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Leave the wardrobes and sweets to British schoolchildren, Shanghai's got a Coke machine that leads to booze.

This secret Swiss fortress is disguised as a harmless pink house, complete with fake windows.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

This innocent-looking townhome is actually a subway exit.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

An ingenious solution to a tricky engineering problem, this spiraling bridge takes drivers for a dizzying spin.

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

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

This high-design church is made up of two dizzying spirals meant to evoke the weaving together of marriage.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

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

A vintage video game wonderland in downtown Reykjavik.

Historical Japanese-Dutch relations are honored with haunted rides and flower fields in this replica town.

The world’s first hotel to be run by robots.

This 47-story "M" needed 20 years to be completed