I love nature and I love my country, Vietnam.
Below is a link to my recommendations for travel in Vietnam in July - August.
Other places to visit in Vietnam in other seasons:
Spring: Ban Gioc Waterfall
Feb: coffee flowers in Buon Me Thuot
30 April: Hue (festivals)
Sept - Oct: Lao Than - cloud hunting in Y Ty
Ba Be national park
Phong Nha Ke Bang national park
Sapa
Da Lat