The national park was once a plantation estate.

The romance of early commercial flight still fills this Art Deco destination.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

A former major munitions plant that has been converted into a sprawling art space.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The secret city built by the Manhattan Project.

This replica of the Greek structure is in the heart of Nashville.

The alley connecting two of country music’s most historic venues has a rich history of its own.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Once the longest swing bridge in Europe.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

The towering figures were created from the cemetery's fallen old-growth trees.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

America's first federal monument.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

This church on a Tohono O'Odham reservation has stood since 1797.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

An eponymous directional signpost erected by the first president of the United States.

This pun was simply waiting to come to life, and one defense contractor made it so.