While the Grand Canyon is Flagstaff's easy-access claim to fame, this even quicker jaunt from the Arizona city offers ...

Sunset Crater Volcano National Monument is open 24 hours; the visitor center is open daily from 9 a.m. to 4:30 p.m. The park charges $25 for a private vehicle entrance; those entering the park on ...

and $15 each for those entering the park on foot or bicycle. Keep in mind that this entrance fee, which is valid for seven days, will also give you access to Sunset Crater Volcano National Monument.