Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

Designed to honor all those that work as nurses around the globe.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

What may be Boston's finest Art Deco building, located in the city's Financial District.

A centuries-old church stands as a testament to Boston's "father of architecture."

The infamous Boston Mob ran rackets from an office here in the 1970s.

One of the indelible moments of the American Revolution took place at this location.

Historic Hull Street was actually the first street with a proper name in the Boston area.

A mysterious stone embedded at the base of a historic Boston building.

This historic patch of real estate offers a glimpse of colonial Boston.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

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

Ice cream stand, snack bar, and time capsule of milk conveyance.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

Beautiful steampunk ghosts of early Massachusetts.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

The site of Paul Revere's historic two lantern warning.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.