My all-time-favorite bread comes out of the outdoor ovens (hornos) in the Indian pueblos. They are conical, and constructed of thick adobe mud.
A hot fire is built and allowed to burn to hot coals. The floor of the horno is raked out, leaving some hot coals around the margin. The dough is inserted with a flat shovel and the entrance blocked.

The Ukrainian settlers in western Canada used a similar oven, but rectangular, and inside the house. On cold nights the family, wrapped in blankets, slept atop the oven. Also damn good bread.

Both the Indians and Ukrainians, however, now mostly use the kitchen range.

There is a pizza chain (CA, HI) that bakes their pizza in commercial ovens of this type.