An ingenious Dutch land art project uses grass ridges to cut airport noise pollution in half.

Colorful and chaotic stacked hotel in North Holland.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A public urinal so pretty, it was declared a national monument.

A unique collection of gilded age mechanical pianos.

A floating cat sanctuary on an Amsterdam canal.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The world's only museum devoted to the wonders of fluorescence.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Cat art as far as the eye can see.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

The collection of signage remembers the midcentury pushback against the new neon light.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.