Strickland's design for the Second Bank of the United States is in essence based on the Parthenon in Athens, and is a significant early and monumental example of Greek Revival architecture. The hallmarks of the Greek Revival style can be seen immediately in the north and south façades, which use a large set of steps leading up to the main level platform, known as the stylobate. On top of these, Strickland placed eight severe Doric columns, which are crowned by an entablature containing a triglyph frieze and simple triangular pediment. The building appears much as an ancient Greek temple, hence the stylistic name. The interior consists of an entrance hallway in the center of the north façade flanked by two rooms on either side. The entry leads into two central rooms, one after the other, that span the width of the structure east to west. The east and west sides of the first large room are each pierced by a large arched fan window. The building's exterior uses Pennsylvania blue marble, which, due to the manner in which it was cut, has begun to deteriorate due to weak parts of the stone being exposed to the elements. This phenomenon is most visible on the Doric columns of the south façade. Construction lasted from 1819 to 1824.