Usability 
Historic Hotels of the Rockies is an association of heritage lodging establishments in the US Rocky Mountain states of Colorado, Montana, New Mexico, South Dakota and Wyoming. All the hotels were constructed between 1862 and 1939 and are listed, or are eligible for listing on the National Register of Historic places.
The mobile site has photos, maps, descriptions of amenities, historic information and click to call numbers and email addresses for each establishment.