Toul Sleng Genocide Museum
Open every day from 8.00 am to 5.00 pm. Visitors are not admitted after 4.45 pm.

National Museum
Open every day from 8.00 am to 5.00 pm. Visitors are not admitted after 4.45 pm.

Royal Palace and Silver Pagoda
Open every day from 8.00 am to 11.00 am (closed to new visitors at 10.45 am) and from 2.00 pm to 5.00 pm (closed to new visitors at 4.45 pm), except when His Royal Highness King Preah

Borom Moneath Norodom Sihamoni conducts religious ceremonies at the Silver Pagoda or Royal rituals at the Royal Palace, then one of the two or both compounds will be closed. During the Water Festival, they're open only in the mornings on the first two days and closed for a full day on the third day.