Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

A lonely beacon, precariously perched atop a remote sliver of rock.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

The natural hot spring that was integral to the creation of Canada's first national park.

A passage grave used in neolithic rituals.

An intricately decorated tiny place of worship.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

An icon of International Style architecture on the outskirts of Rotterdam.

This Dutch statue is a monument to the fictional shrew who brought doom to the city of Stavoren.

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

Now a museum, this building was once a 14th-century monastery and the place where the founder of the Dutch nation lived and was assassinated.

An idyllic hotel that gave its name to a supposed shadow government.

Building Men of War and Indiamen from Holland's Golden Age.

The struggle of a small Dutch island against the sea.

The 20-mile causeway that separates the Netherlands from the sea.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

This former hydraulic laboratory is now a woodland dotted with old engineering models.

An ancient Egyptian temple sits within a modern European museum.