The highest point in Washington state is a volcano covered in glaciers.

A beautiful final resting place for some of the noteworthy deceased.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

A nostalgic bibliographic gem.

Largest Roman Catholic church in North America.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Miraculous tree that seems to sprout out of solid rock.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

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

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

One of Europe's oldest libraries.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The Habsburgs' royal collections of art and wonders.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Baroque celebration of the end of the Great Plague of Vienna.

A church of bones, decorated with 40,000 human skeletons.

Macabre astrological automaton clock dating to the late 1400s.

A saintly relic hidden in a Prague church basement.

A mocking tribute to the past and modern leadership of Prague.

This automated sculpture of two men peeing will spell out text messages with their micturition.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.