National parks: reserve, and go at dawn

Several of the most visited parks (Yosemite, Arches, Glacier, Rocky Mountain, Zion's Angels Landing trail) have required timed-entry or permit systems in peak season, booked on recreation.gov and gone fast. The "America the Beautiful" annual pass covers entry to all of them and pays for itself in three visits. Whatever the park, be at the gate before 8 a.m.: parking at the famous trailheads fills by 9.