Risa

Risa is the capital planet of the Risian Hedony, a Federation Member State, and homeworld of the Risian species. Risa is famous throughout the Alpha and Beta Quadrants as a place of tourism and recreation, and is referred to as a "pleasaure planet." Its native species, notorious for their open sexual mores, number three billion, and the planet hosts up to one billion tourists at any given time. (The Future Begins, et al).