"Vortex" is my favorite work by Richard Serra. "Vortex" has gradual curves, sharp edges, and is able to blend multiple pieces steel to create a unique form. Another aspect I like about "Vortex" is the unfinished steel. Without finish, the steel is subjected to the elements and is allowed to oxidize. This oxidation is what creates the rust on the surface of the steel, but it happens unevenly. This uneven distribution of rust gives the structure character, emphasizes its form, and in my opinion, shows the raw beauty of steel.