The former hotel where Tesla invented the radio.

One of the American Southwest's most extensive collections of Navajo rock art.

A tree bears footwear on the loneliest road in America.

Before the more famous Royal Palace of Caserta, the king of Naples first commissioned this overlooked residence.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

Supposed Massachusetts Grave of a pre-Columbus Knight Templar.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

Over fifty whirling pools left by the glacial age.

Three prestigious academic collections come together to create a world-class natural history museum.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

An enormous, inside-out glass globe built in 1935.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

This century-old painting of a portly 10-foot-tall man spent years hidden behind plaster.

Purdue students would lean over this iron fence to skirt campus rules against smoking and courting.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

Military and first responders can test their skills in a Foggy Bottom mock station down in Georgia.

This Florida arena, once host to "the fastest game in the world," has sat empty for 25 years.

Home to a giant switchblade and one of the world's largest collections of pocket knives, this museum is a cut above the rest.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

A museum dedicated to a sea that should have never been.

A long-vacant Scottish Rite temple in Hollywood has been converted into an art museum filled with Masonic relics.

A comprehensive collection of Pez dispensers.

The final resting place of one of Hollywood’s most prolific and talented actors is on the grounds of a California Mission.

A monument to the frontier doctor who came up with the idea of delineating highways with a painted line.