The infamously lush resort planet, orbiting a multiple star in the same sector as Starbase 12, is renowned for its breezes and easy-going, uninhibited sexuality that play host to millions each year. Benefitting from the most elaborate weather control system in the Federation, it is actually a rain-soaked and geologically unstable jungle in its natural state.

Despite being known as a pleasure planet and its freewheeling nature, Risa has been the focal point for the fate of superweapon Tox Uthat stolen from the future in 2366, the abortive Ktarian Expansion plot using an addictive mental game in 2368, and a series of protests by the reactionary New Essentialists movement in 2373.

It lies at least 6 hours in a Runabout from station Deep Space 9.