The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

The mirrored section takes the shape of Hebrew characters when viewed from above.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

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

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This massive underground salt mine now holds a sci-fi theme park in its depths.

A working farm turned into a museum dedicated to the world's most unbelievably tiny cars.

This bronze statue was dedicated to a 1966 Beatles hit.

Sip cherry liqueur at a bar dating back to 1840.

Eat the ultimate iteration of Portugal's most beloved pastry.

Breathtaking and huge 430 year old maps of Italy.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

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

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

The world's longest continuously running show has played at this small West End theater since 1974.

The medieval woodcut-style artwork chronicles life in medieval London.

At just 51 feet and 10 inches long, it's the shortest street in England.