Turtle House

Turtle House, also known as Old Turtle House or Joab Center House, is a historic home located at Greenport in Columbia County, New York. It was built about 1820 and is an outstanding and unusual example of Federal period architecture. It has a distinctive lozenge-shaped main block with highly unusual double semi-circular porticos and symmetrical secondary wings.

It was added to the National Register of Historic Places in 2001.