Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Only six people can sit inside this delightfully quaint sanctuary.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

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

This church in Pittsburgh is home to the largest collection of religious relics in North America.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The world's oldest continuously operating airport was founded by the Wright Brothers.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

This dramatic rail curve was once the target of a failed Nazi attack.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The land is home to swimming ponies and a legendary 18th-century treasure.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."