San Francisco's newly reopened hands-on science museum.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

The largest island on the great salt lake is home to curious creatures and strange stories.

The fifth-longest natural arch in the world, and the longest outside China.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

University City's quirkiest resident lives in a park named after its first.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This mosaic-covered bar is brimming with curated curios.

Less a museum than a bizarre fantasy world created by artists and engineers.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

The Bong-area park police have asked visitors to please, stop stealing the signs.

The titular fictional logger only inhabits this otherwise historically focussed museum via a piece of fiberglass kitsch.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

Wisconsin's most celebrated export gets the royal treatment on I-94.

A bizarre house filled with an astounding array of collections.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.