No type of building–pyramid, skyscraper, palace–presents so many challenges as the design, construction and sustenance of a botanic garden. John Trexler's Tower Hill: The First Twenty-five Years traces the metamorphosis of a venerable urban horticultural institution, the Worcester County Horticultural Society founded in 1842, into the ever-evolving Tower Hill Botanic Garden which opened in 1986. Located on a hill in Boylston, Massachusetts, with a majestic view of Mt....