On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

The world's brightest bioluminescent bay.

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

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

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.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.

An abandoned dollhouse factory.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

Civil War Fort on an island in the Boston Harbor.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This translucent sculpture represents a quintessential component of New York City's skyline.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This monument is dedicated to Balto, the heroic Alaskan sled dog.

This narrow street is packed with street vendors and bars selling chicha.

This tiny shop has been serving traditional tamales for more than 200 years.

A celebration of Colombia’s premier contemporary artist.

An outdoor gallery of sculptures chiseled from a unique stone.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

Before Nixon, "watergate" meant canals.