This impressive working clock made of 16,000 plants changes its flowers twice a year.

The longest enclosed pedestrian bridge in the world spans 14 lanes of traffic and six rail tracks, all while lighting up the night sky.

The giant birds honor two native North American species.

Known as "Toronto's Flatiron."

The largest glacial erratic boulder on Cape Cod.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

Plymouth's huge yet little-known memorial to the Pilgrims.

P-town goes wild for the malassadas at this 87-year-old institution.

This stimulating sex toy museum is sure to arouse the interest of its visitors.

Provincetown's night owls flock to this 52-year-old pizza joint.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Historic seaside park featuring explorable, abandoned military structures.

A black sand beach where glacial fragments wash ashore and look like sparkling diamonds.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

These enlarged egg sculptures represent the native birds of eastern Iceland.

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

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This elegant arc of a waterfall marks a religious turning point.

The most powerful waterfall in all of Europe.

Walk in the footsteps of the gods and straddle two tectonic plates.

Iceland's largest lagoon is home to stunning multi-colored icebergs.