Places Liquid Helium Wants to Go

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

A startling waterfall, not far from a roadside viewpoint.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The subtle science of a master molecular gastronomist.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

Hidden on the seventh floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

Invented in the mid-19th century, this machine could send copied images via telegraph lines.

This historical theme park celebrates all things noodle.

A network of ancient tunnels and vaulted chambers with mystical Buddhist reliefs, built for ascetic training.

Colorado’s most beloved glacier is an imposter.

Site of the 1926 murder trial of Ernest Burkhart who was involved in the "Reign of Terror."

This unusual building straddles two countries.

One thousand trees were planted in Norway to be used to print books a century from now.

The smallest country in the world.

This 400-year-old tree is actually an immigrant from North America.

Pay your respects to a country that only existed for a few weeks.

Some of the oldest exposed rock formations in the United States.

Fill up your senses in this beautiful riverside garden, dedicated to the works of singer-songwriter John Denver.

Mysterious markers have been giving the public a lesson in dendrochronology for over a century.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

"All Mountains - All The Time."

This enigmatic building features numerous architectural styles.

The largest source of fossilized insects anywhere.