Havana's two biggest dance clubs, the Palacio de La Salsa and Ache, are in hotels on the waterfront promenade known as the Malecon. When it was owned by Meyer Lansky in the 1950s, the Riviera Hotel ballroom that now houses the Palacio de La Salsa showcased the best of Cuban dance music. While much of the hotel decor remains unchanged since before the 1959 revolution, the Palacio de La Salsa now has a powerful set of JBL speakers to blast the latest in Cuban salsa.At private clubs, located far from the waterfront in residential neighborhoods, DJs miraculously pull full dance mixes from the most dilapidated sound systems. When one club changed venue recently, the DJ carried the (3' X 4') speakers on the back of a bicycle.