London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Golden Gate Park's historic collection of plants.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A popular European tradition makes its way to the states on one of America's most famous bridges.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

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

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

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

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

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

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.