Operated by Khmer locals since 2002, the Angkor Express boat offers back-and-forth rides from Penh to Siem Reap and Siem Reap to Battambang in Cambodia. Best for experiencing Tonle Sap Lake's beauty, the boat is mainly operated between August and February, when the water levels along the Mekong River are high. A typical Angkor Express boat ride lasts 6 hours, from 7:30 AM to 1:30 PM.