fascinatingmaps.com

xVmK0 TIL Despite looking like a rectangle on maps, Colorado is actually a concave polygon with 697 sides.
loe5G TIL that there is a remote, Alpine village in Austria with a population of just over 1,000 which has its own underground/metro line. It’s just 1.3 km long, has 4 stations and connects a parking lot with some ski lifts located at the opposite ends of the village.
b9Z1Z TIL that Colorado has 697 sides and is really not a rectangle