An unfinished religious icon that is steeped in profound cultural value and features an incomparable aesthetic, the Basilica de la Sagrada Familia is an astounding marvel. Gaudí began working on this utterly surreal temple, now a renowned UNESCO World Heritage Site, in 1882. Originally intended to be a modest, neo-Gothic church, the Basilica de la Sagrada Familia has since become arguably the most iconic building in all of Barcelona. Gaudí broke away from the reigning neo-Gothic style in the late-19th and early-20th centuries, imbuing his architecture with symbolic meaning and pioneering the Catalan Modernism movement. Intricate details like palm-tree pillars whose bases take the shapes of turtles, eye-catching colors, Baroque-style influences, and materials ranging from mosaic tiles to an array of stones converge to create an absolute masterpiece.