Question: El Retiro is a historic site in Lake Wales, Florida, that since 1970 has been part of a national historic landmark that consists of how many acres of garden?
Sentence (from "Bok Tower Gardens"): It consists of a 250 acre garden, the 205 ft tall "Singing Tower" with its carillon bells, Pine Ridge Trail, Pinewood Estate, and a visitor center.
Relevant evidence: Yes