Agate House Pueblo, Archaeological site in Petrified Forest National Park, US.

Agate House Pueblo is a partially reconstructed eight-room pueblo in Petrified Forest National Park, built almost entirely of petrified wood laid in clay mortar rather than the usual sandstone. The Civilian Conservation Corps rebuilt it in 1933–34 under C.B. Cosgrove Jr.: Room 7 was fully reconstructed with a new roof, Room 2's walls were rebuilt to five feet without a roof, and the remaining walls stand two to three feet high.

Agate House Pueblo was built around the year 900 and occupied through 1200, spanning the Pueblo II and Pueblo III periods. Its eight rooms were raised from agatized wood laid in clay mortar. In 1933-34 the Civilian Conservation Corps reconstructed the ruins under C.B. Cosgrove Jr. of the New Mexico Laboratory of Anthropology: Room 7 received a new roof, Room 2's walls were rebuilt to five feet without a roof, and the rest to two or three feet.

The structure shows early Puebloan building methods and reveals how local materials were used to create lasting settlements in this region. The walls tell you something about the everyday life and practical solutions of the people who lived here.

To reach the pueblo, follow a hiking trail of about 2 miles (3 km) round trip from the park museum, with the first half-mile paved. The path is fairly flat and manageable for most visitors.

What makes this structure special is that its walls are built from petrified wood instead of the usual sandstone, showing how residents had to work with the specific materials around them. This adaptation to available resources makes it a rare example of early building creativity.