19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

A decommissioned tube carriage within a London museum hosts a regular pop-up supper club.

This early version of the guillotine was used to execute the man responsible for its construction.

A sweet symbol marks the place where torturous executions were once carried out.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Protecting the dead from opportunistic body snatchers.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

This sandstone mansion was the home of two of Oregon's most important pioneers.

10,000 flowered plants bloom in the City of Roses.

A daybeacon pyramid is about all that's left of this island that is said to have sunk due to a pirate's curse.

A tiny town in an empty lot was the work of a local eight-year-old.

A unique columnar residence built in the 19th century.

Three prestigious academic collections come together to create a world-class natural history museum.

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

One of the few brewers in the U.S. experimenting with hop-free beers.

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

The first national memorial to honor all women suffragists stands on land where suffragists were once imprisoned.

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

Why have you never heard of the second most popular tourist site in New York?

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

This small shop walked so America could run on Dunkin'.