This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This sprawling bookstore spans four floors and has more than a million books in stock.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

Three prestigious academic collections come together to create a world-class natural history museum.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

A derelict bit of transportation infrastructure hidden in the woods.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

A taste of Middle Earth, in the middle of the Bayou City.

Unlock the secrets of the conjuring arts.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

From scholastic to sepulchral - now under reconstruction.

These abandoned grain silos and tunnels are an urban exploration dream.

The famous author's cottage hideaway.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

The so-called "Statue of Liberty of Los Angeles" is on a one mutant mission to keep L.A. weird.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

A medical facility that has been kept frozen in time.

America's oldest archaeological site or a muddled case of wishful thinking.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

A 19th-century shrine covered with prosthetic body parts as votive offerings.