There are many beautiful beaches in almost every country, but the choice I would say is simple. Go to Varadero beach where boring is not a word. Varadero is a resorts town in Matananzas, north of Cuba. It is one of the many few beaches with a still clam sea. Varadero is called Playa which means blue sea in Spanish. Every year there comes around 300,000 people just in that area.
Ideal place for beach lovers, Varadero is one of the most important tourism destinations in Cuba, world famous for its all inclusive Hotels.