A theme park might not seem like the usual type of attraction to invest in guides, but Dollywood in Tennessee, US has done just that.

The park's new multimedia tour guide, created by BarZ, has a strong selling point - park co-owner and country music legend Dolly Parton narrates the 90-minute self-guided tour experience, appearing on video to tell stories, share memories and point out attractions including a replica of her Tennessee mountain home and tour bus.

BarZ has also recently created GPS-based multimedia walking tour guides for Santa Catalina Island, US and Las Palmas de Gran Canaria, Spain. Both contain maps, information on history and culture, and multimedia triggered automatically by GPS at points of interest; the Las Palmas guide, operated by Smarttour and aimed at cruise passengers, also contains information about local restaurants and tourist offices, and helps guide visitors through the city using public transit.