I like maps (and I have a large collection of road maps I've collected over the years), but I really like maps that are unusual or that have a unique projection, like the Dymaxion map [1] (which can be folded up into an icosahedron [2]) or the Upside Down World Map [3] where north is at the bottom (north at the top appears to be a Western convention; maps of Japan by the Japanese tend to put east at the top, because that's where the sun rises).
But this linear map of Lake Michigan [4] (link via Jason Kottke [5]) is something I've never seen before. It's also continuous in that you can wrap the top edge to the bottom edge. Very neat.
[1] https://en.wikipedia.org/wiki/Dymaxion_map
[2] https://en.wikipedia.org/wiki/Icosahedron
[3] https://www.amazon.com/exec/obidos/ASIN/1865001112/conmanlaborat-20
[4] https://somethingaboutmaps.wordpress.com/2015/09/28/a-matter-of-perspective/