This small-town Connecticut restaurant gives each diner a free book from its vast library.

The middle finger of modernity.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

The anatomical-pathological collection of a man who changed surgery.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Walk through Czech history in Prague's largest graveyard.

Historic funicular railway, believed to be the shortest railroad in the world.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

"Looks so real, it's scary!"

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

A very classy 1920s-era bar right in Grand Central Station.

An antiquated German apothecary on Chicago's North Side.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.