There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A wondrous old library overlooking the nation's capital.

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

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

Working compound meant to allow visitors to reclaim the values and traditions of the past.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

Mariners once used this prehistoric landfill as a navigational landmark.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

Wading through a small lagoon reveals a secret, wild stretch of pristine beach.

One of the best places in Florida to spot rare, carnivorous pitcher plants.

The ruins of a once massive plantation are now a private residence hidden in the Florida wilderness.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

The futuristic test model of an iconoclastic visionary who wanted to redesign the world.

This now-deactivated naval base defended the Florida coast for centuries.

These crumbling foundations are all that remain of the once-stately 1840s manor that gave the town of Bradenton its name.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Off of the Crawfordville Highway in Florida, nature is taking back this decrepit row of Ford trucks.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

St. Augustine's record-setting narrow street was designed to protect against pirates.

It turns out that a hurricane-prone beach is probably not the best place to house wild animals.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

One of only two pod-shaped homes designed by Frank Lloyd Wright.