This Irish museum in a historic 19th century market pays tribute to the glory of butter.

This 19th-century prison once held Irish revolutionary Constance Markievicz, writer Frank O’Connor, and a nine-year-old pickpocket.

Horse cemetery on the grounds of Blarney Castle.

Just a few miles off the western coast of Ireland lies an isle steeped in Irish literary history.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

A monument to a beloved aquatic folk hero in the Irish town of Dingle.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

This beautiful site is where the first transatlantic telegraph was sent from.

An abandoned faux-pub made famous by a Guinness commercial.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

Ireland's only cable car once carried livestock across a treacherous strait.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

An oddly conical beacon perched atop beautiful Irish cliffs.

Petrified footprints of one of the very first vertebrates to walk on land.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

This lucky bronze frog was gifted to Madrid by a casino.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

A haven for book enthusiasts across the street from Retiro Park.

A pair of gigantic baby heads greet passengers at Atocha Station.

A 19th-century architectural masterpiece with ties to Gustave Eiffel.