Where manatees are the snowbird vacationers in these balmy Florida springs.

This natural spring not only claims to heal the wounded but it has also been willed to God.

A mysterious castle built as a monument to lost love.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

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

A derelict bit of transportation infrastructure hidden in the woods.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A historic neighborhood church is reborn as a psychedelic arts collective.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

This grand gothic brewery has been pumping out suds for over a hundred years.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The United States Capitol's former columns still stand.

Jule Körner's house full of bizarre architectural details.

A curious blend of taxidermy, antique tools, creationism, and a purported antediluvian rock.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

The home of pigs, snakes, chameleons, and the alleged largest bunny in the United States.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.