Mark out a square area about 6 x 6 feet in your backyard. Remove the grass and dig about 2–3 inches deep.
Lay down landscape fabric to prevent weeds, then fill the base evenly with gravel or slate chips.
Arrange cinder blocks in a square shape (two blocks per side) to form the fire pit. Stack a second layer on top for extra height and stability.
Check that each block is level and stable. You can fill the inner gaps with smaller stones to strengthen the structure.
Build simple wooden bench seating around the pit using treated wood and sturdy supports. Then add planter boxes for a soft touch of greenery.