Came across and interesting blog post about the Ara Pacis Museum:

"The contemporary fetishization of this moment in history comes from a desire to remember Rome's one-time value and, in turn, anticipate the return of this value. The construction of this new museum is a direct act of myth-making. This agenda is clearly mapped out in the ichnography of the building. The fear of fire, or at least the institutionalized residue of a fear of fire, presumably truly felt by someone at some time but we don't know who, introduces a second logic with a second ichnography. This system is laid out over the first system, using the architecture as its starting point. In this interplay between the two logics, two hands are obviously at play with two different agendas."

Don't know if I agree with the premise - but I will be sure to take note of the fire extinguishers on my next visit.