Holocaust Museum Houston marks 25th anniversary with free event Photo courtesy of G. Lyons Photography/HMH As recent events have illustrated, America sorely needs reminders of unity and tolerance. Just in time, a local and beloved institution is celebrating a major milestone with an important message for the current and future generations. Holocaust Museum Houston celebrates its 25th anniversary on Wednesday, March 3. To toast the occasion, admission will be free and cookies and handouts will be offered to every guest. Patrons will receive a 25 percent discount on all HMH branded gifts in the museum’s store; while the first 25 visitors will earn a free one-year director-level membership good for two people.