The world’s largest concentrated solar plant generates as many problems as megawatts.

This giant temperature attraction created some giant electric bills.

Experience a charming 1930's version of "infotainment."

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

An important Mayan religious and trading center dating back to 200 BC.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

Yo, Adrian!

Seven people are buried in the middle of what's now a movie theater parking lot.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Once a flowing stream and where the USS Monitor, the world's first ironclad, was built and launched.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

A modern addition to the Greenpoint skyline.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

Set sail on a small scale.

A decommissioned military complex that's now a modern industrial park.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

Little Red Lighthouse under the George Washington Bridge.

Walk into the 19th century without leaving Brooklyn.