This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Thousands of well-dressed mummies below a monastery.

The creator of the carousel's bingo-pinball hybrid survives in California's oldest gaming establishment.

The 10-foot-wide Long Beach home was built on a dare.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

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

In the early 1800s, surgery was also a show.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

A daily replay of the experiment that proved the rotation of the Earth.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

World's first "penitentiary," meant to be humane, drove men insane.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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

The cell which saved the life of Ludger Sylbaris, "the man who lived through Doomsday."

This metal eagle one of the final remnants of a newspaper that wanted to keep Brooklyn to Brooklyn.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

This recently uncovered ad for Lindsay's run at Mayor in 1965 had been hiding for decades underneath a billboard.

A Collegiate Gothic quadrangle that surrounds an 18th century secondary school whose financing came from the likes of Alexander Hamilton and Aaron Burr, among others.