Unfinished building is Antoni Gaudí's Sagrada Família in Barcelona, a church that has been under construction since 1882, and that is now expected to be complete in 2026. There are numerous unfinished buildings that remain partially constructed in countries around the world, some of which can be used in their incomplete state but with others remaining as a mere shell. Some projects are intentionally left with an unfinished appearance, particularly the follies of the late 16th to 18th century. Some buildings are in a cycle of near-perpetual construction, with work lasting for decades or even centuries. Antoni Gaudí's Sagrada Família in Barcelona,
Friedrich Wilhelm von Gaudi Friedrich Wilhelm von Gaudi Friedrich Wilhelm Ernst Freiherr von Gaudi (Gaudy) (23 August 1725 in Spandau, Berlin – 13 December 1788 in Wesel) was a Prussian Lieutenant General who served Frederick the Great in the Seven Years' War. His father was Andreas Erhard von Gaudi, a Prussian colonel who died in action near Habelschwerdt on 14 February 1745. His mother was Maria Elisabeth von Grävenitz. Gaudi came from a noble, originally Scottish family, which had served the rulers of Brandenburg for more than 100 years. He studied in Königsberg, and then in 1744 entered the Infantry Regiment "Prinz Heinrich" (Nr.