This coffee shop lies hidden beneath a historic church.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

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

An artistic tribute to the famous singer, just around the corner from where he was born.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

The curious underground history of keeping Paris clean.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Ride the subways of yesteryear.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

A Harvard-area eatery preserves the uncovered tiles of its century-old predecessor.

One of the last remaining movie theatres in the country that features a rear-projection system.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.