This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

A moving memorial to the fallen and missing from WWI trenches.

This memorial museum chronicles the apocalyptic destruction of the First World War.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

This extensive collection covers thousands of years of Polish military history.

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Conflicting markers on its floor tell a tale of two city centers in San Antonio.

Three hundred years of preserved Spanish colonial history in San Antonio.

These boots are made for selfies.

These fantastically named natural pools look like something out of a Scottish myth.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Museum in a swimming pool where the water still flows.

An astounding collection of taxidermy, fossils, skeletons, and even a few strange live beasts.

This statue honors the thousands of Allied avians that served and died for France during World War I.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.