The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The house where the writer spent his formative years.

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

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

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

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

Experience what life was like in Ireland during the Viking and medieval ages.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The oldest public library in Ireland.

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A natural wonder in south Denmark.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Finland's oldest astronomical observatory once played a crucial role in seafaring and timekeeping.

A subterranean house of worship carved right out of the bedrock.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

The Guardian of Tallinn.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The oldest housing complex in Riga is a mini timeline of architectural trends.