 Filming was done primarily at Kaufman Astoria Studios, New York City, with important scenes at Bethesda Fountain in Central Park.The Heaven sequence was shot at Hadrian's Villa, the Roman archaeological complex at Tivoli, Italy, dating early 2nd century.Special effects in the series were by Richard Edlund ("Star Wars" trilogy), who created the two important Angel visitation sequences, as well as the opening sequence wherein the angel at the Bethesda Fountain opens its eyes in the end, signifying her "coming to life".