One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Ride the subways of yesteryear.

This old-fashioned carhop restaurant gave the world the waffle cone.

Take an otherworldly journey in a school dedicated to out-of-body experiences.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

This secluded walking trail is a hidden gem of a Pittsburgh park.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

About 80% of all U.S. avocados are descendants of Rudolph Hass's glorious tree.

A large sculptural artwork and garden in Escondido, California.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

Playable, historic pinball machines fill this Alameda museum.

Handmade treasures from around the world.

The mysterious round rocks of Schooner Gulch.

From Japan to Italy, this California park explores the world's cultures through their gardens.

"Only the devil could play golf here."

This impressive tunnel was dug entirely by hand over the course of 36 years.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

A one-of-a-kind collection of a unique medium.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.