Old railway station of Tai Po Market,
Opening Hours
Monday, Wednesday to Sunday10 am to 6 pm
Christmas Eve and Chinese New Year's Eve10 am to 5 pm
Closed on Tuesdays (except public holidays) and the first two days of the Chinese New Year
but cache is 24 hours
https://www.heritagemuseum.gov.hk/en_US/web/hm/museums/railway.html