In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

A Harvard-area eatery preserves the uncovered tiles of its century-old predecessor.

In the 19th century, this was the center of Boston's Black community.

One of the last remaining movie theatres in the country that features a rear-projection system.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

These whimsical works of art tell the story of the city's past and present.

This candy-colored storybook village originated as a 19th-century Methodist campground.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

Massive galleon from a box-office bomb docked in Genoa.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

This memorial honors those who served on Gallops Island Radio Training Station during the second World War.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.