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

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

Largely overlooked, this little fountain on Museum Island is a whimsical tribute to a Prussian king nicknamed the “Fatty Flounder.”

Fantastic views and thousands of love locks.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

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

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

A historic scientific breakthrough that crosses nine borders.

The enormous isokinetic structure hangs within a science center in Estonia.

Open-air museum with a large collection of Soviet-era statues.

A narrow strip of land is home to the tallest migrating dunes in Europe.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

Flamboyant architecture from the turn of 20th century.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

A small plaque highlights the damage caused by German air raids during World War II.

Belfast's namesake river still winds below the city center, hidden from sight.

The statue honors a beloved bird that once roamed St. George's Market.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

Northern Ireland's Brobdingnagian stepping stones.

This giant sculpture is both loved and disliked by the local community.

This stone harbor was key to Carnlough's limestone industry.