Many of the manufacturers of block retaining walls have also developed columns and free standing sitting walls. This is an affordable alternative to natural stone. Columns are a great design element when defining a space in the garden, assisting traffic flow, and used as the base for pergolas and arbors. Colors, styles and patterns are unlimited and can be incorporated into any design. We recommend top quality products from these manufacturers: Anchor, Allan block , Keystone, Borgert and Interlock.