In 2015 Ramon Tebar was named  Principal Guest Conductor of an opera house located in what city?
Palau de les Arts Reina Sofia Palau de les Arts Reina Sofia (] ; Spanish: "Palacio de las Artes Reina Sofía" ; anglicised as "Reina (Queen) Sofía Palace of the Arts") is an opera house and cultural centre in Valencia, Spain. It opened on 8 October 2005; its first opera staging was of Beethoven's "Fidelio" on 25 October 2006. Tenor and conductor Plácido Domingo has maintained a special relationship with the Palau since its founding and has established a young singers training program there.
La Fenice Teatro La Fenice (] , "The Phoenix") is an opera house in Venice, Italy. It is one of "the most famous and renowned landmarks in the history of Italian theatre", and in the history of opera as a whole. Especially in the 19th century, La Fenice became the site of many famous operatic premieres at which the works of several of the four major "bel canto" era composers—Rossini, Bellini, Donizetti, and Verdi were performed.