The remains of a religious colony, its amusement park, zoo, and baseball empire.

This museum remembers an apocalyptic cult that became more famous for baseball than religious radicalism.

Display that gathers the basic elements of the universe in one convenient location.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Ornate limestone building now filled with geologic specimens, and more.

The first spinning jail built in the United States is the only one that still turns.

Origin of the blue-skinned Fugates of eastern Kentucky.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A rural hall of justice holds the world's only comic book and superhero museum.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

The largest historic preservation organization in the United States.

The city is full of whimsical portals to another world.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

Annual Easter display made up of thousands of hand-painted eggs.