A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

The summer home of the largest colony of bats in the world.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

Wax models of disease and deformity are on display at this German medical museum.

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

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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.

A wunderkammer of mysterious objects and stories.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Started as a kitchen garden, now the second largest botanical garden in the world.

An eerie, derelict amusement park in Berlin.

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

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

A rare view of a preserved Victorian science museum.

The beloved home to all publications indie, erotic, and punky.