Duino (Devin in Slovenian, Tybein in German) in the coastal part of the Municipality of Duino-Aurisina, lying in the region of Friuli-Venezia Giulia in the province of Trieste in north-east Italy. The total population is recorded as 8,753 (4,281 males, 4,472 females in 3,753 families), the population density (per square kilometre) as 193.8, and number of housing units as 3,983. It is noted as the place of death of the physicist Ludwig Boltzmann, and for the Duino Elegies of Rainer Maria Rilke. The two castles are the main attraction: the older, dating back to the eleventh century, is in ruins, while the newer is inhabited to this day and can be visited by tourists. Below the ruins of the ancient castle, there lies a white rock projecting into the sea, the Dama Bianca, which resembles a veiled woman and gave origin to many gothic legends. The new castle of Duino is approximately dated to about the year 1400, when the family Wallsee commanded the construction of a strong fortress. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer. At the end of the 19th century it became the property of the Prince Alexander of Thurn and Taxis. It remains with the family to this day with his grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park. Since 1982, the town has been home to the United World College of the Adriatic, a no-fee international school attended by students from 80 different countries.