The Newkirk House, also known as the Summit House, located at 510 Summit Avenue is the oldest surviving structure in Jersey City, New Jersey. The two-story Dutch Colonial building, composed of sandstone, brick, and clapboard dates to 1690. Originally one story, the outer walls are two feet of stone fitted in lime and mortar. Beams of timber in the basement are six-by-twelve inches and those on the second floor are four-by-six inches spaced four-feet apart. Eight-inch wood pegs, rather than nails, were employed during the time of construction.