 Casas particulares can be recognised by a small sign on the door, with two blue triangles ("roofs") against a white background, which the owners obtain after paying a fixed per-room annual tax.In some Cuban cities and tourist resorts, like Varadero, Playa Santa Lucia and Guardalavaca, the local municipal assemblies determined that casas particulares would represent a threat to the hotel industry, and passed some legislation placing regulations and limits on the industry forbidding the operation of these establishments.