This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

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

Designed to commemorate the king's coronation.

Fantastic stainless steel dragon gates complete with mesh wings.

This supermarket offers shoppers a window into the past alongside their groceries.

Catholics make up 84% of Ireland's population but this Dublin museum remembers the small but important Jewish community.

The modern birthplace of Irish freedom.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

This is the largest cemetery in Ireland and the first cemetery museum in the world.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

One of Ireland's most infamous prisons for rebels including men, women and children.

A brutalist gem towering over the heart of Milan.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.