Phnom Penh does not have any centralized bus station, buses from various companies such as Phnom Penh Sorya Transport, Capital Tours and GST Express operate bus services to & from the unofficial station at the Southwest corner of the Central Market.
Ⅱ. BY FERRY
FROM SIEM REAP
Ferries connect Phnom Penh to Siem Reap and the journey is estimated to be four (4) to five (5) hours. A ticket cost is approximately USD25. These ferries arrive either at Phnom Penh Ferry Port (on Sisowath Boulevard) or on the Riverfront (near street 104).
FROM HO-CHI-MINH CITY, VIETNAM
Some companies organize also a boat trip from Ho Chi Minh to Phnom Penh of at least 2 days with 1 night at Chau Doc (Vietnamese side) where people will change boats.