Set in a sidewalk in New York City's West Village at the corner of Seventh Avenue and Christopher Street you'll find the Hess triangular tile mosaic plaque which reads "Property of the Hess Estate which has never been dedicated for public purposes." In 1910 the city claimed eminent domain to expand the subway but Hess heirs discovered the city missed a tiny bit of the plot which Hess, when asked by the city to donate to the public, refused. Instead they installed the present defiant mosaic. Even after the tiny bit of land was sold to new owners, they had left the plaque in place. It is known to be the smallest plot of land in New York City.