Horseshoe Bend is less than 5 miles from Antelope Canyon, and is a must do if you are in the area. If it free to visit, and is only a .75 mile hike to the overlook.
Horseshoe Bend is a meander in the Colorado River that forms a horseshoe shape. Just 7 miles upstream from the beginning of the Grand Canyon, it is a great way to see river. (It is also a great way to get a selfie with the Colorado River, which is almost impossible from the South Rim. )
Find out more at HorseshoeBend.com