Explore the ancient caves of Hang Son Doong, Vietnam. Hang Son Doong is one of the largest caves in the world and features a fast-flowing underground river. For spelunkers, exploring Hang Son Doong is the equivalent of scaling Mount Everest.
PERU Aguas Calientes, sometimes referred to as Machupicchu Town, is a town in Peru on the Urubamba River. It is the closest access point to the historical site of Machu Picchu, which is 6 kilometres away, and a lovely place to stay overnight
Secluded cave near Lagoa Algarve Portugal [Portugal is has it all. great food and wine sights natural spots (like this one) friendly people. and you can get away with your high school Spanish if you need to.
Ban Gioc-Detian Waterfall in Guangxi, China. It is said to be Asia's largest transnational waterfall because it is shared by both China and Vietnam. Surrounded by picturesque peaks this is definitely one of the most impressive waterfalls in the area.