Hidden beneath the streets of London is a secret subway that only carried mail.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

A clock designed to run with perfect accuracy for 10,000 years.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

One of the world's largest collections of pathological specimens.

A historic house left in "dramatic still life."

The curios of pharmacist and collector Henry Wellcome.

The only pachinko parlor in the United States.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

Direct, creative challenge to Mother Nature's winter wrath.

Most comprehensive museum in America devoted to one ethnic group.

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

An old church full of restored Catholic statues is a makeup artist's labor of love.

This eclectic collection documents the wild legacies of "America's Wickedest Street."

A town filled with hot chocolate, dazzling lights, and lots of Christmas cheer.

This punny mirror of another Wisconsin attraction is exactly what it sounds like.