Hoogstraten also employed his skill with perspective to construct "peepshows", or "perspective boxes". New businesses like peepshows, massage parlors, and bars featuring live showgirls opened. Hobbyists who get together for leaf peeping may refer to their gatherings as "leaf peepshows". Four peepshows depict scenes of the San Diego/Tijuana border from 1887, 1927. Pigalle peepshows are well known for practicing such scams.