The Osborne bull is a black silhouetted image of a bull in semi-profile. Erected as either 14-meter-tall (46 ft) or seven-meter-tall (23 ft) billboards, as of July 2022 there are 92 of them installed on hilltops and along roadways throughout much of Spain.
Osborne bull in Las Cabezas de San Juan, Sevilla
Osborne bull in Ponte Sampaio, Pontevedra
The Osborne bull in Tavernes de la Valldigna was toppled in 2009. The slogan translates from Catalan as "At war for the land!"
One of the US "Art Bulls for Charity" exhibits, on January 18, 2007
A silhouette is the image of a person, animal, object or scene represented as a solid shape of a single colour, usually black, with its edges matching the outline of the subject. The interior of a silhouette is featureless, and the silhouette is usually presented on a light background, usually white, or none at all. The silhouette differs from an outline, which depicts the edge of an object in a linear form, while a silhouette appears as a solid shape. Silhouette images may be created in any visual artistic medium, but were first used to describe pieces of cut paper, which were then stuck to a backing in a contrasting colour, and often framed.
A traditional silhouette portrait of the late 18th century
Goethe facing a grave monument, cut paper, 1780
Corinthian black-figure pyxis, 6th century BCE
Attic Greek black-figure Panathenaic prize amphora attributed to the Euphiletos Painter, ca. 530 BCE