There is lawn furniture, and then there is what you might call landscape furniture—custom seating built right into the terrain. Done right, it can create a little oasis in your yard or even on your deck. Take, for instance, this bench with planters for piers. The entire structure is made from rot- and weather-resistant cedar lumber. It was built using lap joinery, a sturdy construction method meant to keep the planter walls from bowing against pressure from roots, should you decide to plant trees.
See How to Build a Planter Bench
for full step-by-step instructions.