Rock City 3D art
In downtown Chattanooga, TN, located inside the northern terminal for the free electric shuttle, known as CARTA, is a series of 7 3D art / paintings focusing on local attractions. This image represents Rock City, as the Enchanted Trail is the name of the path the leads you along all of the rock formations and other surprizes there.
The spikes were added to prevent birds from perching there.
Here are links to all seven images, if you want to see the others.