This old residential building was once the largest flour mill in the world.

A Perpetually Under construction Park.

The only arched bridge made of stone on the entire Mississippi River.

One woman's lifelong collection is on display in this unassuming house on an Icelandic fjord.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Climbing Iceland's highest peak on the rim of the Oræfajökull volcano.

This rusting remnant of the local herring industry is being given a second life.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

A strange mark in the stone fence of a cemetery fabled to have been made by the Devil himself.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

Explore the dark underground corridors of this graffiti-covered former military fortification.

Rock face that shares a name with Mary Shelley's famous doctor.

Final resting place of the two women killed on a small island off the coast of New Hampshire.

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

One of the few brewers in the U.S. experimenting with hop-free beers.

This humble resting place belongs to one of history's most celebrated restaurateurs.