This high desert botanical garden is a unique display of Northern New Mexico's geology.

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

A completely round house designed for the Atomic Age.

A former connection to City Island, it has been abandoned since the 1930s.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

A painted-over wall in Detroit originally built to segregate a black community from an adjacent white development.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

The only working large-scale tea plantation in the United States.

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

A massive sustainable farm designed by the mastermind behind Central Park.

According to local myth this cemetery is half evil spirits, half good—split down the middle.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

Some of the Old West's most notorious outlaws frequented this mining town.

Eat burgers beneath gargantuan taxidermy and thousands of dollar bills in Utah's oldest continuously-operating bar.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

The headquarters of the famous Yale society.