The collections of the museum are exhibited on three levels while a fourth middle level houses the auxiliary spaces such as the museum shop, the café and the offices. On the first level of the museum there are the findings of the slopes of the Acropolis. The long and rectangular hall whose floor is sloping, resembles the ascension to the rock. Then, the visitor is found at the large trapezoidal hall which accommodates the archaic findings. On the same floor there are also the artifacts and sculptures from the other Acropolis buildings such as the Erechtheum, the Temple of Athena Nike and the Propylaea and findings from Roman and early Christian Athens. Visitors are intended to see the latter during descent in order to keep the chronological order: they will first be directed to the top level, which displays the Parthenon marbles.
The top level of the Museum sits askew on the lower levels to achieve the same cardinal orientation of the ancient temple on the Acropolis. The spacing of the columns of the Parthenon hall is the same as that of the ancient temple, and the use of glass walls on all four exterior walls allows the natural light to illumine the Parthenon marbles as they do on the ancient temple. The 48 columns in the Parthenon hall mark the outline of the ancient temple and form a colonnade for the display of the Parthenon marbles. For ease of viewing, the pediment marbles are displayed at eye level in front of the end columns; the metopes are displayed on the columns, two per column, but not as high as in the ancient temple; and the frieze are displayed behind the metopes, forming a continuous band around the walls of a rectangular space set inside the columns, as in the ancient temple but not as high, again for ease of viewing. From the north side of the Parthenon hall, one can see the ancient temple above on the Acropolis.
As the museum is built over an extensive archaeological site, the floor, outside and inside, is often transparent using glass and thus the visitor can see the excavations below. The museum also provides an amphitheatre, a virtual theatre and a hall for temporary exhibitions.
