No matter how many photos you've seen of the Grand Canyon, nothing compares to being perched, in person, on the rim of its everlasting views. And in the late afternoon, the play of shadow brings the gorges into gorgeous relief. Plan to stay for sunset. Bring a blanket; even summer nights can be chilly, and winter evenings, when the crowds are thinner, can feel glacial at 7,000 feet above sea level. As day disappears behind the distant plateau, breathe in the vista and revel in the fact that you are not stuck in traffic somewhere in some man-made rush hour; you're here, soaking up geologic time.