Collection of fossils, plants, and ancient animals encased in amber.

This colorful gate stands as an entrance to the walled city of Old San Juan.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This small fort played a huge role defending Puerto Rico’s capital city.

Small church built in the 19th century for whites and slaves to worship together.

A safe place for the wild donkeys of a hot vacation destination.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The largest collection of historic military firearms in the United States.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

Abandoned Italianate architecture on the coast of Maine.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

This home is steeped in history from, George Washington to George Corwin, High Sheriff during the Salem Witch Trials.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

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

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

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

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

This parking garage was the site of what was - at the time - the largest cash robbery in history.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.