The Bana mountainous Hills , which stands at the altitude of 1,487m above sea-level, has an average annual temperature that varies between 17 and 20°C (62.6 - 68°F). Each of the four seasons appears within a single day in Ba Na: spring in the morning, summer at noon, autumn in the afternoon and winter at night. One particular characteristic is that the clouds are at the mid-height of the mountain, so the peaks are always clear. Ba Na also possesses very beautiful forests with green pine hills that why it is home to a former French resort built in the early 1920s, which once boasted 200 villas, restaurants, and clubs. Its temperate climate, unspoiled forest, and spectacular views over the East Sea and the Lao mountain range made Ba Na a popular place to retreat for the French and wealthy Vietnamese.