Sinding created a number of sculptures, among others "Mother in Captivity", which won him the Grand Prix at the Exposition Universelle (1889), "Two figures" (1889), and "Young woman at her husband's body" / "The Widow" (1892). Many of Sinding's sculptures are credited to realism, but together with Danish sculptor Niels Hansen Jacobsen, among others, are by many considered much more in the style of Symbolism. An example of his symbolic work is his sculpture "Valkyrjen" (the valkyrie), a bronze cast of which stands in Churchill Park in Copenhagen.