A quiet patch of astroturf laid out between a building that seems to be splitting in half.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

This poignant art installation raises awareness of violence against women.

This sublime architectural marvel is a rare example of an expressionist church.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

A small sculpture that pays homage to the famous bronze ear of Ca de l'Oreggia—or does it?

A mechanized clock where a man fights off a dragon, crab, and rooster.

Along the Rhine, about a mile from the historic Munster, learn the heartrending story of two lovers torn asunder, cast into unknown layers of time and space.

This statue intended for children to enjoy became a minor political spat.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Dedicated to one of the darkest moments in Irish history.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

The Boston square dedicated to the dark poet who was born nearby.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

An enormous, inside-out glass globe built in 1935.