A museum that may well wax horrific.. In Short What do Scooby Doo and most San Francisco tourists have in common? They have all been to the Wax Museum. The somewhat surreal San Francisco Wax Museum houses more than 200 celebrity figures and, possibly taking advice from the Scooby Doo show, has recently added a Haunted House to its repertoire. The museum's newest addition, the Medieval Dungeon, is boo-scary and should be avoided by young children and the faint of heart.