The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

This tiny little island has, as the name says, just enough room for its single house.

The mysterious image is believed to show Edward Hyde, 3rd Earl of Clarendon, in a beautiful blue dress.

Recovered suit of a cannibalistic West African gang.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The lesser-known Alice sculpture of Central Park dedicated to the “godmother of American children.”

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

Stroll through a wonderland of stupendous moss-covered trees.

America's oldest Italian restaurant is a San Francisco institution.

A modern mechanical planetary system, part of a 10,000 year clock.

A huge musical instrument played by the ocean.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

Located in the mountains of Nicaragua, one man has spent most of life beautifying a massive cliff by hand.

More than 350 million years ago, western New York was covered in a vast sea. Today, you can dig up the remains of the plants and animals that lived there.

A Byzantine-style concrete artwork pays tribute to a 17th-century saint.

This sprawling collection of saintly relics includes such fascinations as wood from the Cross of Jesus and threads from Mary's veil.

This exhibit pays tribute to the “humble tinkerer” who invented the implantable pacemaker.

More gold than anywhere else, ever.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.