This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

10,000 flowered plants bloom in the City of Roses.

This replica of an 8th century burial ship actually sailed to Norway before returning home to Minnesota.

These dramatic cola-colored falls have appeared in a poem by Henry Wadsworth Longfellow and a song by Sufjan Stevens.

The site of Paul Revere's historic two lantern warning.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Memorial built in 1922 in remembrance of WWI casualties.

Its collection includes a broad array of social, geographic, graphic design, and political history.

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

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

Hear the quietest sound from across the dome.

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

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This curious, round temple is the oldest still-standing marble building in Rome.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This monumental fountain has moved around the city multiple times.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.