The Teatro Olimpico ("Olympic Theatre"), in Vicenza, was constructed in 1580-1585, and is the oldest surviving enclosed theatre in the world. The theatre was the final masterpiece designed by Andrea Palladio, the greatest architect of the Italian Renaissance, and was not completed until after his death. The trompe-l'œil onstage scenery, designed by Vincenzo Scamozzi, to give the appearance of long streets receding to a distant horizon, was installed in 1585 for the very first performance held in the theatre, and is the oldest surviving stage set still in existence. The Teatro Olimpico is, along with the Teatro all'antica in Sabbioneta and the Teatro Farnese in Parma, one of only three Renaissance theatres remaining in existence. Both these theatres were based, in large measure, on the Teatro Olimpico. Since 1994, the Teatro Olimpico, together with other Palladian buildings in and around Vicenza, has been part of the UNESCO World Heritage Site "City of Vicenza and the Palladian Villas of the Veneto".