He was born at Frankfurt am Main in 1789, where he received his early artistic education.
He soon became noted as a landscape painter and made various journeys throughout Austria and Italy, painting, as he went along, views in the neighborhood of the Danube and in the city of Vienna.
[1] In later life Alt painted a lot in watercolor; he was also a lithographer.
[1] In 1830 the future Emperor Ferdinand I of Austria began a project to commission paintings of the most beautiful views in the Empire.
[2] Alt's extensive herbarium is now in the Lower Austrian State Museum .