Ever since Silo park opened to the public and was transformed into a recreation area, it has become an increasingly popular photographic subject. The tall standing towers, with stairs spiralling to the top, are perfect for symmetric, abstract, fine art images.
The key when chasing symmetric patterns is discovering the element which breaks the symmetry, regaining balance and automatically providing the focal point for your eye to gravitate to.
Consider the first image, the stairs are balanced with the black cut out on the bottom right. Without these two elements, and just the pipe guiding your eye to the top of the tower, there is very little interest. The tower as a whole is symmetric, including the placement of the pipe running up the middle. But the inclusion of the stairs and the tower cutout break the symmetry and encourage your eye to wander throughout.
The photo above is of the same tower as in the first image, just walking a little to the left (you can still see the pipe running up the side on the right). The tower is, again, very symmetric, and without the inclusion of the stairs, and the shadows cast throughout the framework, to break up the composition it would not be nearly as strong. Additional to the stairs is also a small patch of black on the top left corner of the images in the clouds. This throws the eye off even more when guided up the stairs, further improving the composition.
Top tip, while symmetry is beautiful, it can be a little monotone. Find what breaks the pattern and make sure it is in focus. Your images will immediately stand on all four corners and get noticed!