Abstract: An interlocking modular bench system provides an inexpensive stable structure which can quickly be assembled to any desired size and a variety of configurations with minimal effort. Each basic bench unit requires only four fasteners for assembly and interlocks with adjacent bench units whose features can be varied as required. The system is particularly useful for commercial displays such as nursery stock and supplies. It is a further feature that two parallel rows of interlocking benches can form the side walls of an easily assembled covered structure with an interconnected frame supporting a light weight roofing material such as fabric or rigid, structural plastic sheet.