This document discusses two architectural structures that were influenced by Greco-Roman architecture: St. Peter's Square in Vatican City and Low Memorial Library at Columbia University. St. Peter's Square, built in the Renaissance, functions as a public gathering space and exhibits Greco-Roman influences through its symmetrical design and columns. Low Memorial Library, built in the late 19th century, was modeled after the Pantheon in Rome and serves as the focal point of the Columbia campus with its central dome and columns at the entrance. The document evaluates both structures, praising St. Peter's Square for its perfect symmetrical design and Low Library for its architectural perfection and sense of grandeur.