The original purpose of the horse wells was to provide water to patricians' horses, now they adorn the centre. There is a statue in the centre of the well called Der Rossebändiger.
Some visitors like to throw coins into the well for good luck. This scenery also appeared in the movie Sound of Music.
More information at salzburg.info http://www.salzburg.info/en/sights/squares_streets/karajan_platz_pferdeschwemme
Address Herbert-v.-Karajan-Platz, 5020 Salzburg, Austria
Coordinates 47°47'57.725" N 13°2'25.496" E