The first park built over a freeway is a brutalist masterwork.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Couple's personal collection of pinball machines turned public pinball museum.

The largest wooden building in the world now houses a fascinating collection of aircraft.

The wooden airship was the largest flying boat ever built.

One man's eclectic collection of treasures found at sea.

Nestled near the mountains of western Canada resides this behemoth earth mover.

Khmer Rouge's high security prison.

This beautiful, historic church looks like something out of a simpler past.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

An collection of Chinese propaganda posters from 1949 to 1979.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

A tiny plaque hidden miles into the Washington wilderness is all that remains to honor a shipwreck that left 18 people dead.

Rustic natural hot springs in the deciduous rain forest.