360° views of the city plus five floors of optical illusions and hands-on science.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

This 11th century tower is said to be the oldest building in Oxford.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This haunting monument honors the victims of 9/11.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Take a step into the workshop where Edison and his employees revolutionized the world.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

A unique sculpture park that specializes in the huge and bizarre.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A small graveyard is hidden in the midst of a bustling university campus.