A more than 260-year-old crypt built on Boston's oldest English burial ground.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

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.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A beautiful Victorian-era cemetery, complete with a miniature village.

Martha's Vineyard's most beloved speakeasy sells late-night pastries.

A monument to the groundbreaking environmentalist sits near the place where she first experienced the sea.

One was an astronomer who spent his life chasing solar eclipses, the other helped make Emily Dickinson famous.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Two small markers remember the Alamo's feline protectors.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Giant, friendly pelicans in Central London, the most unlikely of places.

An unusual round church in London with a Templar past.

This coffee shop lies hidden beneath a historic church.

This 1920s Dutch barge is now a floating bookstore.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

This high desert botanical garden is a unique display of New Mexico’s ecology and culture.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.