The oldest continuously occupied public building in the United States.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Around 160 years ago, this spot marked the location of a wharf along the shores of the Charles River.

The massive machine creates cracking displays of indoor lightning.

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

One of the now-less-hidden floral gems of the "Emerald Necklace."

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

An enormous, inside-out glass globe built in 1935.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

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

A rim-made reptile in North Dakota.

The world's tallest turtle riding the world's largest snowmobile.

The world's largest Holstein cow.

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

A monument to the center of the North American continent may be off by a few miles.

A true roadside icon standing on the same plains that the herds once roamed.

One man's quest to save his town with a trail of record-breaking sculptures.

The remnants of an early American attempt at missile defense.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.