A school used as a model for public education across the country.

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Bouncing, delightful, mechanical art at the MIT Museum.

A real plaque marks the spot where a Faulknerian character committed fictional suicide.

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

A collection of more than 10,000 racist objects that teaches the atrocities of social injustice and intolerance in American history.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

A temple to modernity, tucked away amid Barcelona's more well known museums.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Week-long block party becomes a competition for the best decorated street.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

The most decorated dog of World War I is preserved in the Smithsonian.

A nostalgic bibliographic gem.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Home to items never before seen by the public.

Debatably clever, or just plain honest hotel advertised as "The Worst Hotel in the World."

A unique collection of gilded age mechanical pianos.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.