Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

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

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

Remnants from a time before electricity.

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

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

Be on the lookout for the symbolic insect all over the city.

The red letters in the literary pavement leading to the library form a mysterious code.

This bronze statue was dedicated to a 1966 Beatles hit.

Makers and sellers of the original and finest York Ghosts.

Follow the original medieval paths that wind through this intriguing section of the city.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

The longest and tallest aqueduct in Britain can actually be sailed across.

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

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

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

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

These barriers stand as stark reminders of Northern Ireland's troubled past.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

A stunning Victorian abbey and walled garden on a lakefront.