This only museum in the world dedicated solely to mushrooms.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

A museum befitting the city responsible for supplying the majority of the world's LSD.

The restored and active Victorian-era final resting place of San Francisco.

A free, public museum dedicated to the fascinating science of sight.

This overlooked museum houses an amazing collection of rare, antique typewriters.

Tubing through a cave lit with glowworms is a magical underground experience.

Rippling sand dunes frozen in the Arizona rock.

Take a drunken tour inside the world's largest known geode.

The rocks in this arid basin leave trails of movement behind them.

The ghostly remains of an accidental sea.

Cold storage for agricultural biodiversity.

Continuing the tradition of the dime museum in style.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

An emerald-green grotto just a short trip from Austin.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

A massive underwater sinkhole made famous by Jacques Cousteau.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Started nearly 100 years ago, this science experiment just keeps on going, ever so slowly.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

Perhaps the most unique of any Frank Gehry design for one simple reason: Gehry himself actually lives here.