Think Tank (Rompecabezas) Children's Museum of Houston Exhibit text in English and Spanish Think Tank challenges minds both young and old with brain games of all sizes, shapes and levels of difficulty. Visitors don their thinking caps and test their mental dexterity as they explore Think Tank’s interactive, hands on challenges through brainteasers, mind-bending puzzles, optical illusions and discrepant events. Four cartoon characters—representing the four phases of the problem-solving process—guide you through the exhibit activities: Carlos the Curious, Felicia Fact Finder, Isaac I’ve Got It and Rosie Risk It. Step into the Think Tank for an extra challenge with the "Question of the Day," a brainteaser, puzzle or logic problem.