The USA no longer hosts the world's-tallest building. That dubious distinction now belongs to a high-rise building in Dubai in the UAE. According to an article on AOL news, the building, named, "Burj Dubai," took a year and a half to complete. Can you imagine how many bathrooms that building holds? Thankfully, the building isn't located in some third-world nation where the bathroom is actually the street or local dock.;)