Look at the U.S. Post Office—Bar Harbor Main, a granite Classical Revival building raised in 1909 at 55 Cottage Street. Built in 1909 as one of twelve post offices of that year, it was part of a government trend to use classical architecture to express democratic ideals and institutions; its significance was later recognized with listing on the National Register of Historic Places in 1986. The building sits on the north side of Cottage Street, just west of its junction with Federal Street, on the fringe of the main village's central business district.
Look at the main facade facing south: a single-story mass of Maine granite, five bays wide, with banded pilasters capped by medallions dividing the bays. The outer four bays hold paired sash windows, each topped by keystones. The central bay houses the main entrance, set in a stonework arch and surmounted by a triangular pediment.
A strong cornice line runs beneath a parapet; behind that parapet a low-pitch hip roof is pierced by three vaulted-arch dormers. Five bays of Maine granite rise from the pedimented entrance to the vaulted dormers above you, just west of where Cottage meets Federal Street.