Playground

A golf course comprising:

• a impermeable artificial turf;
• a thin member of a sponge-structured or foam-structured plastic or sponge rubber material applied under said artificial turf to reduce bouncing of a golf ball rolling on the artificial turf, wherein said thin member responds flexibly to an external force and returns to its original dimension when the external force is removed;
• a buffer of foam material under said thin member, wherein said buffer responds flexibly to an external force and returns to its original dimension when the external force is removed;
• elastic members positioned in the vicinity of the periphery of said artificial turf tensioning said periphery, said elastic members being composed of springs, rubber, soft plastic, or similar elastic material, and
• a boundary member of resilient material positioned over said elastic members and around said artificial turf, wherein said boundary member has a plurality of regularly spaced grooves adapted to prevent wrinkling of said boundary member when applied against a curved surface or from the influence of temperature or moisture.

An artificial golf green, comprising:

• impermeable artificial turf having an inversely disposed groove in the periphery thereof, and having an inner groove member;
• a thin resilient layer that absorbs shock so as to reduce golf ball bounce and hence roll on said artificial turf, wherein said resilient layer responds flexibly to an external force and returns to its original dimension when the external force is removed, said thin resilient layer being disposed below said artificial turf and composed of a sponge-like tissue, plastic foam, or sponge rubber;
• a buffer disposed below said thin layer, said buffer comprising polyethylene foam or polypropylene foam;
• a plate member disposed below said buffer;
• said inner groove member being secured to said plate member;
• elastic members positioned in the vicinity of the periphery of said artificial turf tensioning said periphery, the ends of each of said elastic members being secured to the inner groove member;
• and
• a boundary edge portion formed to interact with said inversely disposed groove member in the periphery of said artificial turf.