Vesper Cliff ( also known as Tioga Terrace, Glenbetsy, and Robert C. John House) an architecturally distinguished Greek Revival-style residence located immediately outside of the Town of Owego in Tioga County, New York. The primary dwelling is a building of "plank" construction to which was added about 1834, a monumental temple-fronted addition designed by architect Alexander Jackson Davis. Also on the property is an unusual barn with a distinctive neoclassical facade treatment, as well as a chicken coop and ice house. It was listed on the National Register of Historic Places in 2005.