One of the “Four Singers” – statues originally placed in a theater in the center of Vienna. In 1881 the theatre burned down completely during a performance of the opera “The Tales of Hoffmann” by Jaques Offenbach.
Almost 400 people didn’t make it out anymore – the statues were undamaged though and were later placed within the palace gardens of Pötzleinsdorf where they are still standing today.
The four statues represent the four singing voices (countertenor, tenor, baritone, and bass.) – my wild guess would be that this one is the bass 😉
For more information on the palace (although there is not much english information)