A 131-year-old wunderkammer of Texas history.

These boots are made for selfies.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

A grove of colossal man-made flowers built to collect the sun's rays.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

The Grand Canyon of Texas.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

An original apothecary from 1792.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

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

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

The oldest continuously operating fish market in the United States.

Washington's iconic carousel has a nice piece of Civil Rights history.