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.
Lviv Theatre of Opera and Ballet The Solomiya Krushelnytska Lviv State Academic Theatre of Opera and Ballet () or Lviv Opera (, Polish: "Opera Lwowska" ) is an opera house located in Lviv, Ukraine's largest western city and one of its historic cultural centers. Originally built on former marshland of the submerged Poltva River, the Lviv Opera now sits at the end of Freedom Avenue (), the tree-lined centerpiece of Lviv's historic Old City, a UNESCO World Heritage Site located in the city's Halych district.