PROBLEM TO BE SOLVED: To prepare a pressure sensitive adhesive sheet to which mosses are secured by adhesively bonding mosses retained in the form of a moss community to one side of the pressure sensitive adhesive sheet and provide a three- dimensional structure formed by using the pressure sensitive adhesive sheet. SOLUTION: The pressure sensitive adhesive sheet to which mosses are secured can be obtained by laying a fiber 3 in a net-like form over a pressure sensitive adhesive layer 2 of one side of a double-sided pressure sensitive adhesive tape or sheet, coating an adhesive 4 thereon and adhesively securing a base portion 6 of the gametophyte of the mosses retained in the form of a moss community to the adhesive-coated surface. A solid structure decorated with mosses can be easily fabricated by applying the pressure sensitive adhesive sheet to the surface of a three-dimensional structure made of metal or concrete or to the surface of a structure in public works or buildings.
