Pan is usually depicted as an ugly, bearded man, with either a goat's or horse's legs and tail. This depiction of him is quite unusual, although it may well have had horns and goat's feet that were removed. This is a 1st century AD copy of a 5th century BC original.

Another Dionysus, this one from the 1st century AD and a replica of a 4th century BC original.

It's hard to get a good photo of a bronze statue. This one is yet another copy, a 1st century AD replica with some 3rd century AD retouching of a 4th century BC original. As you can probably recognize by now, it's a statue of Dionysus.

This statue has been identified as an Aphrodite, but a rather unusual one. It's hard to tell with all the pieces missing, but it appears as though she was nursing a child.

This unusual piece is another example of the contact between ancient Rome and Africa. This acrobat has distinctly African features. It is from the 2nd century AD.

I'm not sure I'd feel very comfortable knocking on this door! These bronze pieces bore the inscription Eta di Caligola 37-41 d.C. which I think might mean they were on the door of the insane emperor Caligula, uniformly regarded as one of Rome's worst emperors.