Le Tran Truong An, general director of VietKings, told VnExpress these experiences are published once a year, based on the opinions and perspectives of experts at the Record Council with an aim to stimulate tourism.
The helicopter tour launched last April takes tourists over destinations like Phu My Bridge, Thu Thiem Bridge, Landmark 81 and Binh Quoi Tourist Area with prices of VND4.08 million ($177.63) per person.
The tour uses an AW-189 helicopter that allows a maximum 16 passengers.
A four-day-three-night expedition of Son Doong Cave in the central province of Quang Binh cost VND69.8 million (around $3,000) before the pandemic, with Oxalis the only company licensed to conduct these tours.
The list of 20 travel experiences also included an animal release tour in Cuc Phuong National Park, night tour of Hanoi's Thang Long Imperial Citadel, turtle-releasing tour on Con Dao Islands, nightlife watching in Nam Cat Tien National Park and Cu Chi Tunnels tour.