Fosfobox is a popular underground club located in the Copacabana neighborhood of Rio de Janeiro. It is known for its alternative music scene and energetic atmosphere. Fosfobox hosts a range of events, including live DJ sets, electronic music parties, and themed nights. The club has a gritty and industrial aesthetic, with exposed brick walls and dim lighting. It attracts a diverse crowd of music lovers and party-goers looking for a unique and edgy nightlife experience in Rio.