The dreamy Quinta da Regaleira in Sintra, Portugal. lso known as “Palace of Monteiro the Millionaire”, this romantic escapade of Quinta da Regaleira near the city center of Sintra, Portugal is listed as a World Heritage Site by UNESCO. Sintra Portugal, Spain And Portugal, Portugal Travel, Portugal Trip, Places Around The World, Oh The Places You'll Go, Places To Travel, Places To Visit, Around The Worlds