Family, French Royal Family, Austrian Imperial Family, and numerous other royal and noble families from across Europe between the World Wars. Styles In design the new houses were rather different from the houses owned by the nobility in Lisbon, and came to be referred to as summer architecture. They were eclectic, both in their individual designs and in the wide range of architectural styles chosen by the owners, and aimed for a high level of external decoration. Architects used included Thomas Henry Wyatt from England and the Portuguese Raul Lino, who designed around 700 projects in his lifetime and developed the idealized concept of A Casa Portuguesa or the Portuguese House. Styles used included Italianate, Swiss chalet style, English Gothic, Louis XIII style, and neoclassical. The Palácio do Conde de Castro Guimarães used a Revivalist approach that included Neo-romanticism, Neo-Gothic, Neo-Manueline and Neo-Moorish styles. Following the overthrow of the monarchy in 1910, there was not the same imperative for affluent citizens of Lisbon to be in Cascais every September. Nevertheless, the building of exotic summer houses continued and extended to neighbouring Estoril, which was becoming a popular resort area and opened a casino in 1916. Notable examples Cascais Palácio dos Condes de Castro Guimarães Casa Sommer Cascais Cultural Centre Palmela Palace Casa de Santa Maria Casa de São Bernardo Chalet Faial Chalet Leitão Palácio do Duque de Loulé Chalet Ficalho Casa dos Pórticos Casa d'Orey Casa Perestrelo de Vasconcelos Casa D. Pedro Palacete Seixas Casa Maria Helena Casa Trindade Baptista Palácio dos Condes de Monte Real Estoril Casa Verdades de Faria Chalet Barros Cavalariças de Santos Jorge Sintra Casa dos Penedos Palácio Valença References External links Documentary on Summer architecture (in Portuguese) Buildings and structures in Cascais Architecture in Portugal