A sculptor's dream castle turned fantastical ruin.

This woodland architectural installation acts as a camera obscura for the heavens.

Wander through more than 20,000 square feet filled with an amazing collection of orchids.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

The coldest city in the world.

Research station devoted to mysterious floating lights seen in a Norwegian valley.

The world's northernmost aquarium looks like it has fallen over.

A naturally beautiful, seemingly bottomless deep blue spring.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

A taste of the macabre Tokyo's ritzy shopping district.

The freshest fish here are the ones you catch yourself.

These giant volcano sponges in Antarctica are thought to be the world's oldest living animal, at 15,000 years old.

A South African bar inside a hollowed out 6,000-year-old Baobab.

Bangkok's men with dangerous jobs come here in search of protective talismans.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Unique antiquarian shop specializing in globes, maps, and prints.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

An essential stop before plundering, BYO Cutlass.

Lavish royal estate punctuated with heated greenhouses.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A science teacher's dream.