One of the oldest lighthouses in the world has been in continuous use since it was first built in 1531.

Historic slum of Tartu.

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

The oldest continuously operating pharmacy in Europe.

Once standing on solid ground, this slender beacon is a victim of the very shoreline it was charged with announcing.

A forest park outside Tallinn full of architectural and artistic curiosities.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

The modern birthplace of Irish freedom.

A stunning Victorian abbey and walled garden on a lakefront.

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

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

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

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

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

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

Stockholm's narrowest alley is barely over two feet wide.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

It houses the remains of a 17th-century version of the Titanic.

Only a fragment of this 15th-century Dance of Death survives today.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.