Montezuma Castle consists of 20 rooms covering five distinct levels. The primary entrance is through a doorway on level 2, with access to other levels through interior wooden ladders which extend through openings in the ceiling. Some of the photographs in this virtual tour show the wooden plank-ways and metal handrails that were added as safety precautions for visitors. Today, efforts are underway to remove these now unnecessary additions to the structure.
The walls are made of locally available limestone rocks stacked and held together with clay, much like laying bricks on a modern house. Once the construction of the outer walls was completed, an adobe plaster was used to coast and seal the exterior. The same practice, although with different materials, is still used today in modern home construction.