Recently, 116 Huntington Ave updated the sideway. In the process, the plaque about the figurines on the building was removed.
Here's a copy of the plaque that I took back in 2011:
Plaque text, from my 2011 blog post:
The CARYATIDS that support the arch over the large oculus of this building were designed by Boston Artist, Syma. The figures reference the original sculpted Caryatids who supported the pediment of the Temple of Diana in ancient Greece. Diana was the Greek Goddess of dance and dreams. Seven stars adorn each panel, a reference to the Pleiades, which, according to Greek Mythology, were the seven Caryatids or Princess of Diana who were places among the stars by Zeus. Each of the stars has six points, a traditional symbol of harmony and transformation. The waves underfoot recall 19th century Back Bay, once covered with water.
This is what the Caryatids look like on the building:
You can see the Caryatids walking on the Huntington Ave Pedestrian over path. Which is located between the Prudential Mall and the Copley Square Mall.