Photo by Gabe.
Ten permits a day (for roughly 20 people) are given to visitors of Coyote Buttes in southern Utah each year. The Bureau of Land Management is so protective of this natural wonder that you have to enter a lottery in order to obtain the holy permits for a day hike. The Buttes are located within magnificent Vermillion Cliffs National Monument and extremely high on my list of git 'er dones.
Before my 40th birthday.
And then... the big dogs of Yellowstone.
Mollies Pack, Yellowstone. Photo from here.