Europe's official "zero-level," the equator of elevation.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

The last of Amsterdam's original sea level markers remaining in place.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

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

The most powerful waterfall in all of Europe.

This modern monument to pagan belief looks like it was transported straight from ancient times.

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

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

Iceland's tribute to its thankless civil servants.

This tiny museum's sizable collection is jammed into a former underground public toilet.

An encyclopedic collection of mammal penises.

Medicinal spa created with the discharge from a geothermal energy plant.

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

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

A unique collection of Science Fiction, Fantasy, and everything in-between.

The artwork commemorates the many ways 20th-century people perished while on the clock.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Willy Wonka would love this weird half-a-home.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

This massive blockhead sculpture hides an entire library.