Barcelona "modernista" architecture (related to the movement known as Art Nouveau in the rest of Europe) developed between 1885 and 1950 and left an important legacy in Barcelona. Several of these buildings are World Heritage Sites. Especially remarkable is the work of architect Antoni Gaudí, which can be seen throughout the city. His best-known work is the immense but still unfinished church of the Sagrada Família, which has been under construction since 1882 and is still financed by private donations. , completion is planned for 2026. Barcelona was also home to Mies van der Rohe's Barcelona Pavilion. Designed in 1929 for
Hyperboloid structure build the tower to 350m were not available. In July 1919, Lenin decreed that the tower should be built to a height of 150m, and the necessary steel was to be made available from the army's supplies. Construction of the smaller tower with six stacked hyperboloids began within a few months, and Shukhov Tower was completed by March 1922. Antoni Gaudi and Shukhov carried out experiments with hyperboloid structures practically simultaneously, but independently, in 1880–1895. Antoni Gaudi used structures in the form of hyperbolic paraboloid (hypar) and hyperboloid of revolution in the Sagrada Família in 1910. In the Sagrada Família,