The fact that this interior and its building were design by a French and an American architect is an early reflection of the cosmopolitanism of New York. The building combines French elements with the Federal style. Building progress of this edifice was slow, primarily due to financial problems, but also owing to workers’ disputes and a yellow fever epidemic. By 1807 the building had only reached the second story window sill level. The City Hall Rotunda shares a sense of elegant spaciousness and even certain details, such as the single first flight of stairs with curved hand railing. The entrance hall, from which one first glimpse the Rotunda, is entered through five handsome arched doorways corresponding to the archways leading into the vaulted central corridor which laterally bisects the building.