The humble gravesite of the man who failed to cash in on his Pepsi-cola goldmine.

Burial site more than 300 years old.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

It was once the base for a series of domestic terror attacks.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The mansion home of author Edith Wharton.

A centuries-old church stands as a testament to Boston's "father of architecture."

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

The "lovely red Vega" of the legendary record-settling pilot.

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

The "Seinfeld" diner.

This downtown Dallas art installation is always on the lookout.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

There aren't too many operational funiculars around, but Pittsburgh has two!

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A grove of colossal man-made flowers built to collect the sun's rays.

One of the now-less-hidden floral gems of the "Emerald Necklace."

Two thousand artifacts from around the world collected by one woman who loved to travel.

The oldest playground in America.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.