Even in death, he's still your huckleberry.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The house where the writer spent his formative years.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

The oldest public library in Ireland.

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

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

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

An abandoned train station in Munich constructed for the 1972 Olympic games.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

The telescope that discovered Neptune.

A stairway to heaven, or to nowhere at all.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This subterranean studio is filled with fascinating kinetic art.

Amsterdam's former hotspot for public executions and dissections.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This unattributed sculpture in Amsterdam is hiding in plain sight.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The attic of a four-century-old canal house hides a clandestine church.