Hai Van Pass
For adrenaline-filled road adventures, jungle-clad mountains, hairpin bends, and incredible views, you can't top the 21-km (13-mile) long, ex-military feeder road known as the Hai Van Pass. Although cyclists have tried it, it's advisable to take a motorbike (experienced riders only) or driver to take on the winding incline to the pillboxes at the pass's peak, where you can stop for photos. After, you can descend towards the lagoon on the Lang Co side where you can pull up a plastic chair for delicious seafood at one of the stilt restaurants, before returning via the Hai Van Tunnel.
