Antelope Canyon is located near Page on Navajo Nation land. This canyon is the most visited slot canyon in the Southwest, partly because it is easily accessible and by far the most publicized, and also since it is extremely beautiful, with just the right combination of depth, width, length, rock color and ambient light; many other slot canyons are deeper, narrower or longer, and some have rock that is even more colorful and sculptured, but here conditions are ideal.
Here's few shots of this natural beauty (upper part of Antelope Canyon), made by myself during trip in Arizona, 2014:
