The other greatest places for walkers are the Grand Canyon in the US, Aoraki/Mount Cook Village in New Zealand, Lake District in England, Torres del Paine in Chile, Lauterbrunnen in Switzerland, Brecon Beacons in Wales, Kakadu National Park in Australia, Taman Negara in Malaysia, and Dartmoor in England.
According to Lonely Planet, walking can be the best way to experience a place.
"Heaven on earth"
For Vietnamese, Sapa is also a top holiday destination.
1.600m higher than the sea level, Sapa has a mild temperature of 15 to 18 Celsius degree.
Though this town welcomes visitors all year around, it is generally agreed to be most beautiful in April and May.
In April and May, Sapa is blooming with green pastures and flowers, many of which can't be found anywhere else in the country, and few visitors fail to marvel at the beauty of the cloudy valleys here every summer morning.
Before the summer, the weather may be a bit cold and foggy, and after the summer, the rain season sets in.
Sapa is also home to many breathtaking spots such as Ham Rong Mountain, Silver Waterfall, Rattan Bridge, Bamboo Forest and Ta Phin Cave.
And this is here that adventurers can climb to Vietnam's rooftop on Fansipan Mountain at 3.143m above the sea level.
Hanoi old quarter hotel Newvision
Add: 68c-70 Hang Bo Str - Hoan Kiem Dist - Ha Noi.
Tel: + 84 4 3923 4132 - Fax: + 84 4 3923 4133 .