The Hopi House, shown in this image, is a reconstruction of a Hopi pueblo as it might have existed about 1000 years ago. It was built the Fred Harvey company, the publisher of this postcard, as a place to exhibit, create and sell Hopi artifacts, and it houses Hopi artists who sell their creations to the visitors.
The description states:
GRAND CANYON NATIONAL PARK, ARIZONA
The Hopi House next to El Tovar Hotel is a re-creation of the terraced Hopi Indian dwellings. It shelters valuable collections of Southwestern arts and crafts.
–This was part of a larger complex of Hopi recreated structures which were occupied by the Fred Harvey company, workers, or were designed as viewing spots for visitors to the Grand Canyon.
This card likely dates from the 1960s.