Marsh Hall

Othniel C. Marsh House
Marsh Hall in 2006
Location360 Prospect Street,
New Haven, Connecticut
Coordinates41°19′19″N 72°55′30″W / 41.32194°N 72.92500°W / 41.32194; -72.92500
Area6.8 acres (2.8 ha)
Built1876
ArchitectJ. Cleaveland Cady
Architectural styleQueen Anne
Richardsonian Romanesque:43
Part ofProspect Hill Historic District (ID79002670)
NRHP reference No.66000875
Significant dates
Added to NRHPOctober 15, 1966
Designated NHLJanuary 12, 1965
Designated CPNovember 2, 1979

Marsh Hall, historically known as the Othniel C. Marsh House, is a historic house on Prospect Hill in New Haven, Connecticut. The property, which includes the house and a 6.8 acres (2.8 ha) grounds now known as Marsh Botanical Garden, was declared a National Historic Landmark in 1965. It was built in 1878 as the home of Othniel Marsh (1831–99), a leading 19th-century paleontologist, who occupied it until his death. The house is now owned by Yale University, and the building is occupied by the Yale School of the Environment.