Great place to go experience nature and beauty in S.E.T.X (South East Texas) they also have a small museum in the Visitor Center. Great Trails with plenty of rest stops with benches and clean restrooms on site.
For 200k VND you can get to above 40th floor to have a view (recommended at a sunny day, especially for sunset) or for 250k VND to the same as for 200k AND also above 50th floor to Heineken's brewery. You get a 45min tour, 2 beers and a bottle of water.