Camillo Sitte was an influential Austrian architect and urban theorist whose 1889 work, 'City Planning According to Artistic Principles,' emphasized the aesthetic experience of urban spaces over rigid adherence to symmetry. He advocated for irregular urban forms and a focus on the details of public spaces, challenging contemporary patterns of industrial urbanism. Sitte's ideas continue to impact urban planning by prioritizing the interplay of culture, art, and function in creating appealing cities.