The Houston Museum of Natural Science is one of the most heavily attended museums in the United States, and one of the most attended venues in Houston. The museum houses The Burke Baker Planetarium, The Wortham Giant Screen Theatre, showing 3-D films, The Cockrell Butterfly Center and The Permanent Exhibit Hall. The Permanent Exhibit Hall, shows a fascinating variety of permanent exhibit areas, that examine astronomy, space science, Native American culture, paleontology, energy, chemistry, gems and minerals, seashells, Texas wildlife and much more. In addition, the museum frequently presents traveling exhibitions on a variety of topics.