This natural sea arch highlights Ireland's rugged coastal beauty.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

A comprehensive collection of bonsai set in a beautiful campus.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A mesmerizing sculpture marks the site where the activist was arrested after evading capture for 17 months.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

The world’s largest collection of Tiffany glass sits in a warehouse in Queens.

The largest greenhouse in the world is home to over one million types of plants.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

This fairytale-like structure is the last turf church ever constructed in Iceland.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

This quirky outpost and gallery inside a former church is an unexpected trove of handcrafted art.

A New York warehouse filled with an enormous amount of goods saved from the landfills and donated for creative use.

This tangled English forest looks like something right out of a fairytale.

This picturesque medieval monastery guards a small trove of historic treasures.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Enormous, fluffy dogs frolic around this museum dedicated to a legendary Saint Bernard.