Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The house where John Wilkes Booth conspired with his co-conspirators.

Go take a picture with the inventor of the daguerreotype photographic process.

This free museum is building a collection of books that are banned, censored or burnt around the world.

The oldest continuously operating pharmacy in Europe.

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

A unique sculpture calls the outside of this steakhouse home.

This park built on a former fortress has a reputation for romance.

A wooden street sign is the last remnant of this 400-year-old alleyway.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

With a design inspired by traditional Latvian textiles, this monument honors the Latvian people who suffered under Soviet occupation.

A black cat protests the City Guild in Riga's Old Town.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

3,000 market stands in five former Zeppelin hangars.

The reconstruction of this prominent building fulfilled a long-written command.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

The oldest housing complex in Riga is a mini timeline of architectural trends.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.