GALLERY OF DESIGNS — click a thumbnail for a larger version    Streets
	This town, about ten blocks wide, surrounds a small lake.  It's unusual in that everyone lives on one of two streets:  either Alameda or Broadway. All traffic is one-way.  Approaching the town from the north, you're on the blue highway labeled North Avenue.  When that highway reaches the lake at the center of the octagon, it curves to the east and becomes Alameda.  Starting with address 1000, Alameda circles clockwise, slowly spiraling further away from the lake.  Addresses go up by 100 for each eighth of a revolution.  When Alameda crosses North Avenue again, the addresses jump from 1799 to 2000 as the second revolution begins.  (Maybe I should have used a ten-sided polygon inside of an eight-sided one; then there would be no need for a jump.)  The addresses reach 5799 (at the top of the diagram) before Alameda ends; at that point, traffic merges onto North Boulevard headed out of town (red). (TEXT CONTINUED BELOW) If you turn off Alameda onto any of the radial connectors, you can make another turn onto Broadway, the red line that circles the lake counterclockwise.  Broadway begins at 5200 (on the right of the diagram), where inbound traffic on blue East Avenue enters the town, and spirals inward to end at 1000 Broadway, where it curves to the right and becomes outbound North Boulevard. The trick in finding a particular address would lie in choosing from among the many opportunities that the radials offer you to turn onto Alameda or Broadway.  Get onto one of those streets too soon, and you'd have to circle the whole town one or more times to reach your address.  Get onto the street too late, and you'd never find your address because it would be behind you.  Directional signs would be essential.