In this paper, we develop an automatic collection system that can extract some accommodation websites in a certain region and detect whether a website is an official one. First, we show that the system can gather a lot of Web pages by using the search engine Google and extract only the Web pages of accommodation facilities among them, and then classify some accommodation websites by the facility name and rank them in order of probability that the website is an official one. To implement the system, we used the Web crawling and data mining techniques. To evaluate our system, we applied the system to the Hokkaido region, which is one of the most popular tourism areas in Japan.