A hidden "place of interment for gentlemen."

The remains of the great moral philosopher reside in a university in London.

The building that inspired Shirley Jackson's "The Haunting of Hill House."

Impossibly life-like natural history models created out of glass by a father and son.

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

Enormous lake at the bottom of a unique cave system.

Private collection of art inspired by cabinets of curiosity.

Mummified monks and the accidentally interred, in a 17th-century crypt.

An extensive collection of ancient Egyptian artifacts and mummies.

Antiques by the Bay.

A cluttered and astounding collection of antiquities and curiosities.

Budapest's Communist-era statues, banished to the suburbs.

Museum dedicated to the terror regimes of Hungary.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Ride the subways of yesteryear.

A modern zoetrope on the New York City subway.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A beautifully eclectic mix of architectural styles.

Metro station with a claim to rock n' roll fame.

Op-art architecture designed for happiness.

A church of bones, decorated with 40,000 human skeletons.