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A beach in 2121.
A beach.
A holographic recreation of a tropical beach at moonlight
A beach was an area (usually comprised of sand) near a sea or ocean.
Henry Archer and his son made a flight test with their remote controlled model spaceship on a beach with a lone tree on Earth in 2121. (ENT: "Broken Bow")
In 2270, Hikaru Sulu suggested using the beach program that was available in the rec room of the USS Enterprise. TAS: "The Practical Joker"
Risa was famous for its beaches. (ENT: "Two Days and Two Nights"; TNG: "Captain's Holiday"; DS9: "Let He Who Is Without Sin...")
In an alternate reality, during a mission to Nibiru, James T. Kirk and McCoy planned to rendezvous with a shuttle on a beach, a plan which they ultimately had to change. (Star Trek Into Darkness)
In 2266, while under the influence of polywater intoxication, Captain James T. Kirk expressed a longing for being free of command responsibilities and for spending a few days on a beach with a woman. After receiving a cure for the polywater, Kirk gazed at Yeoman Janice Rand, saying merely, "No beach to walk on." (TOS: "The Naked Time")
Benjamin Sisko met his future wife Jennifer on Gilgo Beach on Earth. (DS9: "Emissary")
Geordi La Forge spent days creating a holodeck simulation of a tropical beach for a date with Christy Henshaw. The date however, did not go well, as she "didn't like him in that way." (TNG: "Booby Trap")
In 2377, Counselor Deanna Troi vacationed at a beach somewhere on Earth, where she was approached by Lieutenant Reginald Barclay, who was seeking her help. (VOY: "Inside Man")