This piece is called "Roots of Rail". It was created by an outfit called North Road Woodshop in Foster, Rhode Island. The owner and head stair builder is Jed Dixon, but it was one of his craftsmen, Mike Kennedy, who did most of the carving. The house is a total gut renovation of, and addition to, a Second Empire home in Cambridge, Massachusetts. The architect is Matt Sargent of Hickox Williams Architects. The photo was taken by Peter Vanderwarker.