Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

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

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The world's most remote airport.

The largest stone moai on Rapa Nui.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

Concrete strongholds stand guard over the Golden Gate.

Known as the "Hobbit Houses," these storybook homes look like they're straight out of the Shire.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

A historic Montreal market that was the city's agricultural hub for over century.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.