ShotHotspot has mapped 26 abandoned places in Coconino, Arizona, ranked by how often they're photographed, viewed and voted for. The most popular are Verde Valley from Jerome State Historic Park, Arizona Ghost Town and Motorcourt Arizona Abandoned. Some are private property or unsafe, so get permission before you visit.
We don't know whether you're allowed to visit any of these places. Many are private property, closed to the public or unsafe: get permission from the owner or the relevant authority, and take safety precautions.