The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A haunting collection of the vanished and disappearing natural world.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

One of America's oldest private membership libraries was long one of New Haven's best kept secrets.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Once a ferry dock, radio transmitter, and now a new Greenpoint park.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

This everlasting lightning storm may be the world's largest generator of ozone.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

An extra-wide chair built to accommodate the former president's big behind.