Relics designed to contain and conceal Yugoslavian submarines.

A bronze sculpture honoring a famous Serbian writer and a character from his novel.

The mysterious “claw marks” said to be left by the Devil on Pisa’s famous cathedral.

Spitfire airplanes with butterfly wings hover over Prague’s skyline.

This underground tunnel system built during World War I offers a fascinating glimpse into Pula's military history.

A square-domed symbol of resilience in the heart of the old Jewish Ghetto.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

The oldest private art gallery in all of Hungary.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

Everything from miniature biblical scenes to life-sized statues are almond-based at this sweet and nutty gallery.

A collection of intricate sculptures so small they have to be seen through a microscope.

Once the home of a hermetic monk, this cave now houses a small church.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

A bronze woman in a stylized dress honors a courageous politician.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

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.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This abandoned factory once produced Yugoslavia’s iconic Yugo automobile.

A remnant of the Franco-Prussian War, lodged in the city's walls.