The history of the current Regaleira begins in 1892, the year in which the property was acquired by Dr. Antonio Augusto de Carvalho Monteiro.
The architect Henri Lusseau designed the first plans between 1895 and 1896, but the inability to reinterpret the Manueline style intended by the owner led to the search for another interpreter. Carvalho Monteiro would find in Luigi Manini, who had made a career as a scenographer at Teatro La Scalla and later at São Carlos and in the main Portuguese theaters, his right hand man. Between 1898 and 1911, he exposed his mysterious iconological program and Manini designed, commissioned and supervised.