Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A 200-year-old prison that now houses a peculiar crime museum.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Bits and pieces from the ill-fated Donner Party's winter cabins.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

What happens when a sculptor has to find a way around a 100-year-old copyright.

The final resting place of a space program monolith, soon to be unveiled again to the public.

Remote, volcanic island that Darwin, Hooker, and the Royal Navy shaped into a thriving, artificial ecosystem.

Curious crater remnants in the middle of the Australian outback.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

This giant dish located in a sheep paddock was the primary receiver of Apollo 11 TV transmissions.

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

Taxidermy of the racing horse with a huge heart, who inspired hope in the Depression.

Fiberglass fish built in 1968 after months of fundraising.

Designed by artist Pro Hart, built elsewhere in 1980.

Located on top of mines that run through Broken Hill.

A modest park memorial pays tribute to one of the Titanic's most revered storylines.

England's most notorious suicide spot.

Both church and state get put to the torch in this annual festival in the "Bonfire Capital of the World."

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

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

These stark white cliffs were spat up by the sea and are slowly being retaken by it.