Agate House is a partially reconstructed Puebloan building in Petrified Forest National Park, built almost entirely of petrified wood. The eight-room pueblo has been dated to approximately the year 900 and occupied through 1200, of the Pueblo II and Pueblo III periods. The agatized wood was laid in a clay mortar, in lieu of the more usual sandstone-and-mortar masonry of the area.^[2]

Agate House Pueblo
U.S. National Register of Historic Places
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Nearest city	Holbrook, Arizona
Coordinates	34°48′18″N 109°51′40″W / 34.80500°N 109.86111°W / 34.80500; -109.86111
NRHP reference No.	75000170
Added to NRHP	October 06, 1975[1]

The ruins of Agate House were reconstructed by the Civilian Conservation Corps in 1933-34 under the direction of C.B. Cosgrove Jr. of the New Mexico Laboratory of Anthropology. Room 7 was fully reconstructed with a new roof. Room 2's walls were rebuilt to a height of five feet, but not roofed, and the remaining walls were rebuilt to a height of two or three feet.^[3]