There are plenty of reasons to backpack in Vietnam. From the bustling streets of Ho Chi Minh City to the stunning Halong Bay, there are plenty of sights and attractions to explore. Here are 10 of the best! photo: Quang Nguyen Vinh 1. Ho Chi Minh City Ho Chi Minh City, formerly known as Saigon, is the largest city in Vietnam. It's a bustling metropolis with a mix of French colonial architecture and Vietnamese traditions.…