On 29 January 1849, the Equestrian circus (Конный цирк) opened on Theatre Square. This was also the work of the architect Cavos. The building was designed to double as a theatre. It was a wooden structure in the then-fashionable neo-Byzantine style. Ten years later, when this circus burnt down, Albert Cavos rebuilt it as an opera and ballet house with the largest stage in the world. With a seating capacity of 1,625 and a U-shaped Italian-style auditorium, the theatre opened on 2 October 1860, with a performance of "A Life for the Tsar". The new theatre was named Mariinsky after its imperial patroness, Empress Maria Alexandrovna.