One of the prettiest places in the world that I've been to. The lines and the curves are out of this world.
This is located on the border of AZ and UT. To get in, you have to apply for a permit. Only 20 people are allowed in a day. The permit is a lottery 3 month in advance, and only 10 slots are available online. If you enter without a permit, I think it's a $500 fine per person. Rangers do check!
We felt very fortunate to have gotten the permit. We talked to some one who took 4 tries to get the lottery! The trouble is worth the view though. I'd do it again in a heartbeat!
Canon 5D Mark II
17-40mm F/4 @ 17mm