Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

This Scottish manor house is a lush relic from the life of a literary great.

This single room has survived the centuries with almost no deterioration.

This natural sea arch highlights Ireland's rugged coastal beauty.

A section of the long chain that blocked enemy ships from entering Constantinople.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

An eerily abandoned stone tower is all that remains of a demolished dam on Cape Fear River.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

The only medieval bridge in Britain with its defensive tower still in tact.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

The eclectic observatory castle of a 19th-century astronomer and explorer.

The largest brick bridge in the world.

Memorial to the Titanic engineers that died working to hold back the sea.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.

This small museum concentrates on the juicy history of orange production in Florida.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

The "Prussian Versailles" that is as glorious today as when it was built.

A quaint Russian village in the middle of a German metropolis.