Pharmaceuticals are not sold at supermarkets, only at 'farmacias' (pharmacies), identified with a green cross or a Hygeia's cup. Nearly every city and town has at least one 24 hour pharmacy; for those that close at night, the law requires a poster with the address of the nearest pharmacy, possibly in one of the nearby streets or towns. People from the European Union and a few more European countries can freely use the public health system, if they have the appropriate intereuropean sanitary card. That card does not work in private hospitals. Agreements are established to treat people from a few American countries; see the Tourspain link below for more info. However, do not hesitate to go to any healthcare facility should you be injured or seriously ill, as it would be illegal for them not to treat you, even if you are uninsured. Though most foreigners tend to think Spain is a warm place, it can be terribly cold in winter, especially in the Central Region and in the North, and in some places it is also rainy in summer. Remember to travel with adequate clothes. In summer, avoid direct exposure to sunlight for long periods of time to prevent sunburn and heatstroke. Drink water, walk on the shady side of street and keep a container of sun cream (suntan lotion) handy. Most cities have a good water supply, especially Madrid, but you may prefer bottled water to the alkaline taste of water in the east and south. Smoking On 21 December 2010, the Spanish Parliament approved a law prohibiting smoking in all indoor public and work places and near hospitals and in playgrounds, becoming effective on 2 January 2011. Smoking is now banned in all enclosed public spaces and places of work, in public transportation, and in outdoor public places near hospitals and in playgrounds. Smoking is also banned in outdoor sections of bars and restaurants. Smoking is banned in television broadcasts as well.