This historical air terminal in Houston is slowly becoming an aviation museum dedicated to the city's aeronautical history.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Eighty million natural history specimens call this gargantuan museum home.

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Banksy gives themself artistic license with this piece of London street art.

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

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

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

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

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

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

This massive redwood tree has a hole in the base big enough to drive through.

A trash dump made beautiful by nature's power.

One of the last free public hot springs is decorated with hippie art.

Quite simply the largest tree in the world (by volume).

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.