Exotic landscapes and travel were popular themes, particularly trips to India, New Zealand, and the Arctic regions. Popular subjects in America were of river journeys, such as in Dunlap’s "Trip to Niagara", and trips out west following the railroads that were quickly springing up as America expanded. Banvard's enormous Mississippi River panorama was shown on both sides of the Atlantic and a moving panorama of "Romantic and Picturesque Scenery in the Environs of Hobart Town" taken to London in 1839 allowed people in England to get an impression of Australia. A narrator explained the scenes passing in front of the audience and music played. In the United States, moving panoramas were popular throughout the 1850s and 1860s, with multiple touring shows operated by proprietors such as Edwin Beale, T.K. Treadwell, Henry Lewis and George K. Goodwin. Among the more popular subjects were the Arctic regions, major cities such as New York, the Mississippi River and Niagara Falls.