The Arriaga Theatre is an opera house and concert hall located in Bilbao, Spain. It is named after the famous composer Juan Crisóstomo Arriaga, who was born in Bilbao in 1806. The theatre was built in the late 19th century and is known for its beautiful architecture, which combines elements of Neo-Baroque and Neo-Renaissance styles. The interior of the theatre features elaborate ornamentation and is designed to provide excellent acoustics for both operatic and symphonic performances. The Arriaga Theatre is one of the most important cultural institutions in the city of Bilbao and hosts a wide range of events throughout the year, including opera, ballet, theater, and concerts by some of the world’s most renowned performers.