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.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

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

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

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

A multi-storied adobe complex has been inhabited for more than a thousand years.

A modern day curiosity cabinet.

The most powerful waterfall in all of Europe.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

This natural rock formation features seemingly unnatural vertical ridges that have been blamed on elves.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

This scenic Icelandic lava flow is named for a pair of Berserkers who were murdered, according to a famous Saga.

This black church sits alone among a field of lava rock.

A sulfuric martian landscape that looks far better than it smells.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This stunning concert hall has become a symbol of Iceland's national recovery.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.