A precursor to Taro Okamoto’s iconic Tower of the Sun.

Three historic trains run on a half-mile track that features a tunnel.

Underneath this water pump, Annie Sullivan helped Keller speak her first words.

Dine on old-school red sauce fare at a former mob hang out and film set for The Sopranos.

This abandoned, spaceship-like building is home to a museum so unpopular that it has been put on hiatus for over two decades.

The former home of the 11th president of the United States.

A historic canal winds through a unique, swampy landscape.

Try the frozen treat that inspired Arrested Development's famous banana stand.

One of the last Art Deco gas station still standing in Dallas.

From a canyon-like gorge, more than 20 million gallons of water emerge every day, while a smaller spring drips down, creating the illusion of an endless, gentle waterfall.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

The United States' first transcontinental automobile road came to its end at this spot in San Francisco's Lincoln Park.

Metal horses galloping through a London fountain provide a link to the city's past.

This post-war motel embodies a little-known, Miami-born architectural style.

A historic hydroelectric power plant serves as the unusual backdrop for a public park.

An ode to this small town's big film history.

This building contains a door only used by members of the royal family.

Home to a forest of whimsical pygmy Coast live oak.

Once the primary source of ice in this region during the mid-20th century.

Designated as an Underground Railroad research site.

Explore a misty river canyon from a metal bridge system.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

A unique art installation located on what was once considered the widest railway bridge in the world.

Where you can experience the story of Appalachia, as told by Appalachians.