The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The unbelievably opulent home built for an infamous newspaperman.

A remarkable medieval structure born from a 14th-century disaster.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

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

London's smallest police station is barely the size of a phone booth.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Home to items never before seen by the public.

The only road through the heart of Glacier National Park.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This amazingly preserved Gold Rush town is a historian's dream.

A smoke stack so large, the Washington Monument could fit inside!

An entire town preserved as a historic landmark.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

New fungal and bacterial species call this deadly lake home.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.