the Latin verb root sano, meaning to heal, and adopted the new word sanatorium." Switzerland used to have many sanatoria, as health professionals believed that clean, cold mountain air was the best treatment for lung diseases. In Finland, a series of tuberculosis sanatoria were built throughout the country in isolated forest areas during the early 1900s. The most famous was the Paimio Sanatorium, completed in 1933, designed by world-renowned architect Alvar Aalto. It had both sun-balconies and a rooftop terrace where the patients would lie all day either in beds or on specially designed chairs, the Paimio Chair. In Portugal, the Heliantia Sanatorium in Valadares was used for the treatment of bone tuberculosis between the 1930s and 1960s. In 20th-century United States In the early 20th century, tuberculosis sanatoria became common in the United States. The first of several in Asheville, North Carolina was established by Dr Horatio Page Gatchell in 1871, before the cause of tuberculosis (then called "phthisis" or "consumption") was even known. Fifty years earlier, Dr. J.F.E. Hardy had reportedly been cured in the "healing climate". Medical experts reported that at 2,200 feet (670 m) above sea level, air pressure was equal to that in blood vessels, and activities, scenery and lack of stress also helped. In the early 1900s, Arizona's sunshine and dry desert air attracted many people (called "lungers") who had tuberculosis, rheumatism, asthma, and numerous other diseases. Wealthier people chose to recuperate in exclusive TB resorts, while others used their savings to make the journey to Arizona and arrived penniless. TB camps in the desert were formed by pitching tents and building cabins. During the tuberculosis epidemic, cities in Arizona advertised the state as an ideal place for treatment of TB. Many sanatoria in the state of Arizona were modeled after European away-from-city resorts of the time, boasting courtyards and individual rooms. Each sanatorium was equipped to take care of about 120 people. The first sanatorium in the Pacific Northwest opened in Milwaukie Heights, Oregon in 1905, followed closely by the first state-owned TB hospital in Salem, Oregon, in 1910. Oregon was the first state on the West Coast to enact legislation stating that the government was to supply proper housing for people with TB who are unable to receive proper care at home. The West Coast became a popular spot for sanatoriums. The greatest area for sanatoria was in Tucson with over 12