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,
Church of the Immaculate Conception of the Blessed Virgin Mary, Warsaw most of the building's contents were destroyed, including the roof and the stained glass windows designed by H Bardzińska. Reconstruction work began in 1946 and was largely complete by the end of the 1950s. Church of the Immaculate Conception of the Blessed Virgin Mary, Warsaw The Church of the Immaculate Conception of the Blessed Virgin Mary () is a church on Grójecka Street in the Ochota district of Warsaw, the capital city of Poland. Designed by architect Oskar Sosnowski, construction started in 1911 but was interrupted in 1914. Before construction resumed in 1927 the church hosted the parish of St