Piranesian
/ˌpɪrəˈneɪzɪən/ /ˌpɪrəˈneɪʒn/adjective
Of, resembling, or characteristic of the architectural style or theories of Piranesi, especially in being fancifully or gloomily neoclassical.
Origin
1920s; earliest use found in Aldous Huxley (1894–1963), writer. From the name of Giovanni Battista Piranesi, Italian architect and artist + -an; compare -ian.