World's Longest Map of Route 66
We discovered this on our way from Stan's Barber Shop ("It Pays to Look Trim") to the Wigwam Motel. It fills a couple of outside walls of a shuttered restaurant, and appears to stretch at least as far from end to end as the self-proclaimed (and now destroyed) "World's Longest Map of Route 66" further west in Meteor City.
The "map" is the usual cartoon ribbon of black paint as the highway. One wall labels major (for Route 66) cities from the west coast east to Chicago. The other, more Arizona-focused mural emphasizes the importance of petrified wood in the sweeping pageantry that is Route 66 -- after all, Holbrook is Petrified Wood Central. As with most mural maps, don't trust scale, distance, or north-south orientation. "Home of Gertie" the dinosaur may be further from the "Agate House" than is suggested here.
Holbrook has several home-made tributes to Route 66 painted on the walls of its downtown businesses, all of which are a little confusing as the road here isn't designated Route 66 any more; it's been changed to Route 180.