The Mareorama was an entertainment attraction at the 1900 Paris Exposition. It was created by Hugo d'Alesi, a painter of advertising posters, and was a combination of moving panoramic paintings and a large motion platform. It is regarded as one of the last major developments in the technology of panoramas, shortly before the medium became obsolete. It consisted of a 70 m (230 foot) long replica of a steamship and 2 panoramas , each 750 m (2,460 feet) long, on large rollers. It could accommodate up to 700 passengers at a time.