Antoni Gaudi’s work escapes classification. Critics described his early work as “florid Victorianism” and his later work as “surrealistic hallucinations.” The focus of Gaudí’s work is movement; there is a constant flow through his designs, and nature informs many of his decorative motifs. Consequently, many of his iconic works featured curved interior and exterior elements. Gaudí was influenced by neo-gothic architecture and built upon this by designing structures with large curved windows and curved balconies. Some of his works, including the Casa Mila apartment building, use curved lines exclusively and do not incorporate any straight lines in its structure or architecture. Bright colors and ceramic sculptures with trencadis mosaics make his work eye-catching and are a nod to Spain’s “Mudejar” style. Perhaps his greatest achievement is the Sagrada Familia —  which, while still under construction, is one of the most visited tourist sites in Spain and earned Gaudi the nickname “God’s architect.”