One of the best-preserved medieval streets in Europe.

The National Park Service’s best-kept secret with views that rival any in D.C.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

The Spanish king's private bathroom embraced the idea of a porcelain throne.

Dedicated to a veritable Houdini among P.O.W.s who escaped imprisonment on five separate occasions.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.

Vermont's hills are alive with the sound of music at this historic hotel.

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

The phrase "the shot heard around the world" was coined after a skirmish at this bridge.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

This fountain was designed to honor the man who helped bring water to Barcelona.

The site of one of the deadliest skirmishes during the Battle of Fredricksburg.

Designed to commemorate the founding of the first settlement in Delaware.

A miniature train theme park, free to the public, laying at the base of the Santa Monica Mountains.

The site of the largest mass execution in Rhode Island history, haunted by the ghosts of hanged pirates.

The origin of these small islands' sweet names is a local mystery.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

A fascinating community art piece created by students, teachers, and noted Philadelphia artist Isaiah Zagar.

This neon sign is an homage to an Alfred Hitchcock film.

This location holds the truth to what truly happened that faithful night.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

Built in 1945, this historic train station has a new lease on life with its baggage area serving as an event space.