A particularly disconcerting tribute to Irish martyrs.

The ruins of a monastery that dates to the 7th century.

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

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

The "Prussian Versailles" that is as glorious today as when it was built.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This stunning concert hall has become a symbol of Iceland's national recovery.

Dine amidst exotic plants at this former royal greenhouse.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

Steadily reminding Czechia of its past.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A mocking tribute to the past and modern leadership of Prague.

Three columns of volcanic rock shoot out of the ocean.

At this beautifully preserved Pre-Hispanic site, you can see ancient petroglyphs with depictions of llamas and alpacas.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A Milwaukee museum provides an unsparing and ultimately empowering look at the Black American experience.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

Walls of stone rise up from sinkholes caused by underwater erosion.

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.