The family goes on a quest for "The Griswold Family Christmas Tree." With his usual over-enthusiasm, Clark has planned a "good, old-fashioned family Christmas." His family is wary of his plans but Clark is oblivious. He has nostalgic moments of Christmas past when he is accidentally locked in the attic. Clark outdoes himself with 25,000 lights on the roof, but he can't get the power on. Eventually the lights turn on and they are spectacular, blinding the neighbors and causing a power drain at the local nuclear power plant. In addition to the usual family get together, the Griswolds have some unexpected visitors. Eddie and Catherine show up. In spite of all the good intentions and careful planning, Christmas plans go awry.While sledding, Clark uses a newly invented chemical on his toboggan and winds up traveling at blinding speed, burning most of the bottom off of the toboggan. Clark eventually dreams that the swimming pool is in his backyard and soon learns Eddie and his family have lost their home and are living in the RV. Clark's frustration at not receiving his expected Christmas bonus eventually erupts yelling swear words and cousin Eddie kidnaps his boss.The family gathers again on the front lawn to enjoy the "Christmas Star," which turns out to be an explosion. Clark watches this strange but touching sight and finally realizes that his dream of the perfect, family Christmas has finally come true. The Santa and reindeer lawn ornaments fly across the sky, having been propelled by the explosion.An audio tour or audio guide provides a recorded spoken commentary, normally through a handheld device, to a visitor attraction such as a museum. They are also available for self-guided tours of outdoor locations. or as a part of an organised tour. It provides background, context, and information on the things being viewed. Audio guides are often in multilingual versions and can be made available in different ways. Some of the more elaborate tours available include original music and interviews, offering an experience more comparable to an audio documentary than to a traditional guided tour.Traditionally rented on the spot, more recently downloaded from the Internet or available via the mobile phone network. Some audio guides are free or included in the entrance fee, others have to be purchased separately.

A GPS tour is an audio tour or a multimedia tour that provides pre-recorded spoken commentary, normally through a handheld device, for mobile applications such as walking tours, boats, buses, trolleys and trains. GPS tours can either be GPS guided or self-directed tours that provide visitors with location relevant content about points of interest along a route or within a destination or region. GPS tours are predominately for outdoor applications, but some audio guides offer the flexibility to manually continue tours indoors.Using satellite technology (GPS), audio and/or multimedia content is triggered based on a user's location, providing location relevant information to visitors depending on who they are, where they are, and what they are viewing.A GPS audio tour provides "background, context, and information on the works being viewed".The Economist magazine has stated that "aiming such services at tourists makes sense — since people are more likely to want information when in an unfamiliar place. Used Cisco Equipment Los Angeles SEO