Turret Arch is the smallest of the three arches you'll see on the Windows Loop
Trail, but it is part of a more intricate, castle-like rock formation that includes a spire (hence the name). There are two holes in this formation, one you can walk through and one high up on the rock face. The views of the north and south Window Arches from inside the Turret Arch are neat. The trail to Turret Arch is a very gentle incline with only a few stairs.
To reach Turret Arch from the Windows/Turret parking area, take the Windows Loop
in either direction and look for the Turret Arch turn off. The most direct route would be the leg leaving to the south/southeast (rightmost trail facing the rock formations), the longer route would be the leg leaving north/northeast (leftmost trail facing the rock formations). But truly, the Windows Loop
is delightful and short, so completing the entire loop and all of its spurs is highly recommended.
Early morning is thought to be the best time to photograph Turret Arch for the best color.