A cannonball fired during a war against Sweden is wedged in the wall of this old post office.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

The Guardian of Tallinn.

Take a seat and hear a song by the composer Frédéric Chopin.

The European Union’s tallest freestanding structure provides radio and television broadcasting to half of Latvia.

The last king of Poland was interred in this church nearly 200 years after his death.

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.

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

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

A relic of Poland's shipbuilding past, reborn as a sky-high lookout.

A 13th-century convent where St. Margaret of Hungary spent her teenage years.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This building has survived for more than a century and remains virtually untouched.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

A diminutive statue that was inspired by the sculptor's own daughter.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.