The abandoned funicular tunnel was a secret base for the BBC during World War II.

A replica of the first public theater built in California.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

The California capital city once stood 10 feet lower than it does today.

From the late 19th century until the 1960s, these stone-lined "stumps" were a popular place for people to air their views on local and international issues.

It's a mystery as to why this inland village chose the dolphin as its symbol.

Local lore says passing infants through its holes could magically cure them of measles and rickets.

The King is honored by an elaborate grotto on a continent he never visited.

Not the result of an accident, hurricane, or aliens, this is an eye-popping tribute to the Melbourne tram.

Plastic pups and their colorful homes greet travelers on this otherwise ordinary Australian street.

A distinctive monument for this former world champion takes the form of a billiards table, complete with balls and cue.

These upturned herring boats make nifty storage sheds for fishing goods.

This Georgian Gothic building was created to shelter and feed deer.

Explore Hull's historic Old Town by following the sea creatures scattered throughout its charmingly cobbled streets.

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

"The Wonder From Down Under," a worm shaped museum celebrating the endangered Giant Gippsland earthworm.

The castle still holds traces of the abandoned Roman fort it was built atop.

This bronze statue was dedicated to a 1966 Beatles hit.

What do we know about the real woman behind one of the Beatles' most famous songs?

The wooden airship was the largest flying boat ever built.

The last manually operated turntable ferry in the world.

One of the world's largest tractors was built to replace camel caravans.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.