Agate House Pueblo, in Petrified Forest National Park in Arizona, is a partially reconstructed Puebloan site notable for being built almost entirely of petrified wood set in clay mortar rather than the region’s more typical sandstone masonry. The eight-room pueblo dates to about 900 and remained occupied through 1200, spanning the Pueblo II and Pueblo III periods and reflecting centuries of Puebloan settlement in the Southwest. Its present appearance also reflects twentieth-century reconstruction: in 1933 and 1934, the Civilian Conservation Corps rebuilt portions of the ruins under C. B. Cosgrove Jr., fully reconstructing one room, partially rebuilding another, and restoring the remaining walls to lower heights.