Check the time in 145 countries at once with this East German relic.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

Cold war icon and onetime "hole" in the iron curtain.

Tiny memorials honor individual victims of the Holocaust.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

An enormous roadside attraction in the heart of Spain's toy-making hub.

Hidden underground, a remarkable 10th-century bath complex survives virtually unaltered.

Originally planted by the ancient Carthaginians, this sprawling palm grove is one of the largest in the world.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

A monument at Alicante Marina honors a little-known hero of the Spanish Civil War.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

For many years, the origin of these enigmatic artificial caves was the subject of debate among historians.

This human-made cave is one of the many snow storage chambers that supported the ice supply industry in the Sierra Mariola area.

This decorative arch symbolizes the history of this medieval village but still maintains a modern purpose.

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

This ancient amphitheater was restored in the early 1990s.

The blowhole bursts spectacularly right next to the buildings in a medieval seaside town.

A place steeped in history that may be best known as the set of a 1960 film.

From grand battles to daily life, this Spanish museum offers a view of world history in miniature.

Former 19th-century apothecary serves a top-tier version of Valencia's signature cocktail.

This house's itty bitty size means no humans allowed.