One of the world’s largest collections of paper memorabilia chronicles 4,000 years of papermaking.

This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.

This stone is a marker of one millionaire's personal vendetta against gravity.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

At 130 years old and 126 feet tall, it is the largest known example of the rare Torrey pine tree.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

One of few remaining antique carousels with stationary animals in the U.S.

The clock that sets them all.

A giant bug impaled on a 75-foot-tall needle.

A clock designed to run with perfect accuracy for 10,000 years.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Macabre astrological automaton clock dating to the late 1400s.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A beautiful and classically designed villa, with an hourly infestation of monsters.

On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

The world's first commercial spaceport is a disappointment of cosmic proportions.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Buried beneath the New Mexico sands are believed to be millions of copies of Atari's E.T. video game.