Final answer:
Antoni Gaudi's architectural ideas were influenced by Catalan Modernism, Gothic and neo-Gothic movements, organic forms, and art from Persia, India, and Japan. His deep Catholic faith and preference for three-dimensional models over traditional plans were also significant in his design approach, resulting in innovative structures like La Sagrada Familia.
Step-by-step explanation:
The main sources of architectural ideas of Antoni Gaudi were manifold, reflecting a rich amalgamation of various artistic influences and personal religious convictions. Gaudi's style, known as Catalan Modernism, was distinctive for its ornamental use of materials and geometric shapes. The Sagrada Familia in Barcelona stands as a testament to his unique approach.
Gaudi was influenced by a variety of sources including Gothic and neo-Gothic movements, organic forms found in nature, and art from Persia, India, and Japan. He was also inspired by the work of John Ruskin and the medieval value placed on architecture. Gaudi's deep Catholic faith played a crucial role in his work, especially seen in the church's design through organic geometry that created a fantastical and complex expression.
One of his most notable methods was the avoidance of traditional plans on paper; instead, Gaudi preferred building three-dimensional models to capture all details. This allowed him to conceive buildings, like La Sagrada Familia, with innovative structural solutions such as vaulted ceilings supported by tilted columns, thus eliminating the need for external buttresses or internal braces.