Specific Free Times: General Admission Only
Buffalo Soldiers National Museum – FREE Thursday 1-5 pm
Children’s Museum of Houston – FREE Thursday 5-8 pm
Czech Center Museum Houston – FREE last Monday of the month noon-4 pm
The Health Museum – FREE Thursday 2-7 pm
Holocaust Museum Houston – FREE Thursday 2-5 pm
Houston Museum of African American Culture – FREE Thursday 6-8 pm
Houston Museum of Natural Science – Permanent Exhibit Halls FREE Thursday 3-6 pm
The Houston Zoo offers free admission to guests on the first Tuesday of each month, September through May, from noon until closing. June, July, and August do not have Free Afternoons.
The Museum of Fine Arts, Houston – FREE Thursday 10 am–9 pm
http://houmuse.com/free-admission-times/