For 32 years the famous Ringling Bros circus troupe spent winters in this sunny spot in Florida.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

This outdoor mural is one stop on a walking trail that weaves art and history together to tell a tale of local history.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

Built by an accountant with a dream of running a grand resort, this estate has sat vacant for over half a century.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

One of the world's most advanced radio observatories sprawls across the Atacama Desert.

The world's largest fully steerable radio telescope.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

The largest radio telescope in the world searches for extraterrestrial life from the remote limestone peaks of southern China.

The only Florida state park with publicly accessible caves.

A tribute to the furry local heroes who helped get residents through many tough times.

Ancient church constructed with a special wood that preserves prints from the past.

A humid oasis combines recreation with exploration in a unique underwater cavern.

For a time this small Florida town of less than 1,000 residents was the national leader in dismemberment.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

This beautifully deceptive waterfall is something far different from what it appears to be.

Some 20,000 dust-covered unwanted vehicles languish in the desert.

The longest living non-clonal organisms on Earth.

Budapest's Communist-era statues, banished to the suburbs.