Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

Model Trains and Much More in Hamburg.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Millions of numbers carved in glass represent the tattoos forced upon victims.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Museum dedicated to awful artwork.

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

One of downtown Berlin's last reminders of its Communist past.

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

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

Carved fountains poignantly placed in parks and in front of special monuments.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

The home of a 19th-century author who brought African-American folktales to the mainstream is now Atlanta’s oldest house museum.