Legend says this sacred tree was a gift from goddess Athena.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

A pre-war mansion that survived the modernization of Athens.

This abandoned shopping arcade has new life as an art installation.

The Lobotesis family has been baking some of the best savory pies in Athens since 1910.

A sharp sculpture made of thousands of pieces of jagged glass.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

This museum houses an imposing skeleton army comprised of creatures great and small.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

A lush vertical garden blooming in the heart of Paris.

This stone angel is one of the biggest caryatids in all of Paris.

Paris' linguistic guide to the international language of, yes, love.

This installation turns abstract economics into a stark, public spectacle.

This statue honors the thousands of Allied avians that served and died for France during World War I.

Museum in a swimming pool where the water still flows.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This monumental mural crafted nearly 40 years ago is still in perfect condition.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

Six beautiful wooden giants are hidden around Copenhagen.

This marker commemorates a long-lasting historical haunting and demonic possession that led to one of Denmark's worst witch trials.

A natural wonder in south Denmark.

According to legend, this is the burial place of a mythical three-legged death omen horse.

Nordic giants resurrected from the sea and restored to their former greatness.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.