Numerous colourful hot air balloons filled the blue skies over Thu Thiem 2 Park, attracting a large number of spectators. Festival-goers will have the chance to take hot air balloon rides and contemplate the city from a height of 70 metres. Each ride lasts from 5-15 minutes. The festival is expected to attract nearly 100,000 visitors and is also important in attracting holiday-makers to the city, contributing to boosting the recovery of sustainable tourism./.