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

Get in line for Lisbon’s most famous sandwich.

Little-known artist couple chose a former silk factory as the location for a museum dedicated to their work and other avant-garde art.

This little-known national museum houses over 40,000 works of art from across the world.

One man's remarkable private collection of art from around the world.

This charming candle shop has been in business since 1789.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large part in Dublin.

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

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

A line number in Amsterdam that will likely never be used again due to its tragic history.

This bronze statue of Martin Luther King was placed in the park without permission.

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

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

The history and future of cannabis.

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

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.