Las Vegas’ Aria Hotel rated 7th greenest hotel in the U.S. TripAdvisor’s Green Leaders program helps travelers plan a greener trip by staying at highly rated green hotels. The most recent list provides the top 10 green hotels in the country, and one Las Vegas hotel made the list: the Aria, ranked at number 7. For the full top ten list and article about the program, see the press release from Market Watch of the Wall Street Journal.