OPEN: 9:00-17:00 (365days)
Address: 313 Iwaya, Yosano, Kyoto 629-2314 (629-2314 京都府与謝野町岩屋３１３)
*From Amanohashidate station(天橋立駅) take a train to Nodagawa station(野田川駅). Then take a bus about 15mins and get off at Iwaya-kouminkan-mae(岩屋公民館前) and walk a minute. Train fare:240yen/single, Bus fare:200yen/single
*From Amanohashidate station(天橋立駅) take a bus about 12mins and get off at Iwataki(岩滝) then take another bus about 22mins and get off at Iwaya-kouminkan-mae(岩屋公民館前) and walk a minute. Bus fares:200yen/ride
The official website in English.
Well, their website is kind of flashy....
TIPS: If you interested in textile probably worth to visit, if you are not, better to spend your time visiting the other places. And inside of the museum is quite noisy because of sounds of machines although they are not producing anything there anymore. At the factory shop, you can buy some goods made with Chirimen(Kimono) fabric and also other goods made by silk.