Dedicated to a young woman who broke gender barriers at the University of Madrid.

This one-room doctor's office has been moved twice, and now lives on as a museum.

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

The location where the famed author and abolitionist began his journey to freedom.

Where you can hail your favorite fictional commanders-in-chief.

Dedicated to the untimely death of American balloonist and parachutist.

This Art Nouveau gate still stands at the former entrance of a 20th-century Spanish writer's colony.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

Three bronze deer sculptures relax along the Scioto Mile.

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

Touching the iron railings of Tarragona's balcony to the Mediterranean is said to bring good luck.

A unique sculpture calls the outside of this steakhouse home.

The last vestige of a once substantial orchard and farm in the suburbs of Northern Virginia.

The Conduit Road Schoolhouse is one of the last one-room schoolhouses remaining in Washington, D.C.

The final resting place of a physician rescued during the bombardment of Fort McHenry.

A former pillar of the Black community in Ellicott City.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

These spartan apartments are provided to clergymen visiting Vatican City.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.