A massive metal lobster welcomes tourists to a roadside restaurant.

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

A trash dump made beautiful by nature's power.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

One part antique store, one part curiosities hodge-podge.

Unrepaired walls from a 1920 anarchist bomb attack.

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

A clear example of the process of erosion in action.

Popular tourist destination now stands as a memorial to Sam the koala.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

Eighty million natural history specimens call this gargantuan museum home.

The taxidermied remains of a once-great parrot.

The once-dying town of Sheffield, Tasmania has reinvented itself as a village of painted wonders.

Concrete strongholds stand guard over the Golden Gate.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

This turn of the century masterpiece has a mysterious goaty interloper.