The National Anthropology Museum currently has a special exhibit with a quite impressive collection of classical statues collected by British travelers on their tour of the continent. The pieces on exhibit are primarily Roman from the first and second centuries A.D., and most are on loan from a number of museums and collections in the United Kingdom.
Here is a sampling of items in the exhibit...
"Lion Attacking a Bull"
carving from a Roman sarcophagus
the mythological god of medicine, Asclepius
Silenus, the god of drunkenness
"The Abduction of Persephone"
"The Punishment of Prometheus"
The exhibit runs until April 28th, and admission is free.