An incredible 150-mile network of tunnels constructed by Vietnamese resistance fighters during the long struggle for independence.
Katie, Original Traveller
Well worth a visit from Ho Chi Minh are the Cu Chi Tunnels.
Flight from London
GMT +7 hrs
Nearby is the colourful Cao Dai Great Temple, a centre of the Cao Dai religion (funnily enough), which incorporates elements of both Taoism and Buddhism.