Well, I have not been to many deserts around the world, only a few in south western USA. But they are beautiful.
Two deserts that really look interesting, and are surprising, are the Antarctic and Arctic desert, which also happen to be the two biggest by land area. While we don't usually think of these two extremely cold locations as deserts, they get only a small amount of rain (or snow) a year.
I would also want to visit some of the deserts in the Middle East, and see the large sand dunes and miles of endless sand. That is something I like about a desert, it stretches on seemingly endlessly.
By other's responses, most thought this question was about dessert, not desert. Hopefully you meant to use desert, and not dessert.
As a side note, here is an easy way to know when to use dessert or desert. If you are talking about the sweet edible kind of dessert, then use two 'ss' because you want more of it right? And if it is the sandy, dry kind of desert, it only has one 's' because you don't want to stay there long.