Ho Chi Minh City, also known as Saigon, is the largest city in Vietnam. It is located by the Saigon River, in the southern part of the country, with more than 10 million people. Many tourist attractions include the War Remnants Museum, Reunification Palace, Notre Dame Cathedral, Central Post Office, Ben Thanh Market, and Bitexco Financial Tower. The nightlife in Saigon is blooming. Night trips by Vespa, Scooter & Moped in Ho Chi Minh City give travelers more opportunities to taste the best local food on small alleys. For a day tour, Cu Chi tunnels are famous historical sites travelers can take 1/2 day or full day by bus or boat. The tunnels are an immense network of connecting tunnels located in the Củ Chi District of Ho Chi Minh City (Saigon), Vietnam, and are part of a much larger network of tunnels that underlie much of the country. Viet Cong soldiers used the tunnels as hiding spots during combat and as communication and supply routes, hospitals, food and weapon caches, and living quarters for numerous North Vietnamese fighters.