It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

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

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

Across Valencia lie the remains of three ancient fortifications built centuries apart: a Roman enclosure, an Islamic expansion, and a medieval Christian wall.

This sculpture in Valencia features 22,000 tiny, obsidian blue figures that pay homage to the Lady of Elche.

The devil-defying mark left by a saint as a boy is visible inside Lisbon's cathedral.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The world's oldest bookshop still in operation.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

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

A subtle memorial marks where a human chain protested Soviet control in 1989.

This enigmatic artifact remained buried in a churchyard for years.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

The reconstruction of this prominent building fulfilled a long-written command.

With a design inspired by traditional Latvian textiles, this monument honors the Latvian people who suffered under Soviet occupation.

A statue built to honor the elite soldiers who fought for Latvia during World War I.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

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

A monument commemorating the 852 lives lost in the sinking of the MS Estonia.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

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