This is one of four marble Triton and Naiad Fountains in Maria Theresa Square. Triton was a merman, the Greek god of the sea and son of Poseidon. Notice the conch shell. Triton blew it like a trumpet to control the seas. A naiad is a mythological nymph of fresh water. This fountain in front of the Museum of Art History (Kunsthistorisches) was sculpted by Edmund Hofmann von Aspernburg in 1890. The other three fountains were created by Anton Schmidgruber and Hugo Haerdtl.