At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

This abandoned viewing platform has become a monument to unnecessary government spending.

An oversized, oddly designed pedestrian overpass has drawn comparisons to a commode for pachyderms.

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

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A full-scale sculpture of a mermaid and baby grand piano hidden underwater by David Copperfield.

A mysterious taxidermy man-beast of the seven seas.

Antique gaffe kept in the basement of a small Vermont natural history museum.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Reportedly 1,400 years old, this may be the first of the Fiji Mermaids.

First LEED-certified gas station in the United States.

Common all over Japan, kōbans are small community police boxes, and now one is guarding one of L.A.’s megamalls.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Bronze statues honor the brave explorers who passed through this Antarctic gateway.

The spot where the namesake of the Douglas fir met his mysterious end on a Hawaiian volcano.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

An obelisk marks the exact center of the continent, as per the calculations of the legendary Brazilian explorer Cândido Rondon.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

The great polar explorer is remembered in this far northern town, where he embarked on his final expedition.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A remains of a stone shelter are a reminder of "The Worst Journey in the World."

The last manually operated turntable ferry in the world.