This outdoor observatory offers stellar views and a scale model of our solar system.

This functional solar system model was inspired by the famous Eisinga Planetarium.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

Pluto is still considered a planet in Ithaca, New York.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

Odd outsider art installations surround a Gold Rush-era ghost town.

Instead of becoming a power plant, this abandoned complex became a massive letdown.

One of the earliest—and most commonly forgotten—acts of rebellion against English rule.

A curious building honoring past and current members of a historic musical comedy troupe.

Man-made geyser that rises to the exact height of the Gateway Arch.

A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

This natural sandstone bridge hasn't been seen since the 1960s when Lake Powell covered it—until now.

The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

One man's ambition created this psychedelic log home.

The famous greeting card maker owns a collection of paintings by the famed surrealist.

A unique sculpture designed to raise stroke awareness.

Metal monsters made from repurposed materials lurk alongside this Pennsylvania road.

This local landmark is home to art galleries and the area's only community darkroom.

A remote horde of architectural treasures fit for Indiana Jones.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

A journey along this trail means indulging in a slice of nostalgia.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.