 On other nights, "Mark Twain" will run through the evening, using a high intensity rooftop spotlight to point out sights, with the final trip beginning about thirty minutes before park closing.A Mississippi steamboat was included in the plans for the first Disney amusement park that was to be built across the street from his Walt Disney Studios in Burbank, California.Although this park was abandoned in favor of the much larger Disneyland, the plan for having a riverboat attraction was retained.