Relics of Australia's convict past, and a modern scene of unimaginable horror.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

Clusters of huge boulders in the Australian Outback.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

A clear example of the process of erosion in action.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

This expansive bridge in the Canadian wilderness was originally just built for friends.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

This massive redwood tree has a hole in the base big enough to drive through.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This abandoned subway station can still be seen on regular commuter trips.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

Elevated freight railway turned wildly successful urban park.

Home to items never before seen by the public.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.