A resort planet said to be perfectly safe, with an atmosphere that mildly intoxicates visitors, where the Enterprise crew takes shore leave in the Strange New Worlds fourth-season episode Human Best Friend.
Cesnar, also referred to as Cesnar Grand, is a pleasure planet that bans technology and advertises itself as entirely safe. Its air is reputed to have a gentle intoxicating effect on those who breathe it. The resort is run by an administrator named Dendru.
In Human Best Friend, from the fourth season of Strange New Worlds, Pike approves shore leave there while the Enterprise is on its way to the Rodaxian homeworld for peace negotiations.
The break does not go to plan. Members of the crew suffer hallucinations and wake with heavy hangovers, effects that are traced to the planet's atmosphere, and a bomb is then discovered aboard the shuttle.