The 2 main cities here are Ho Chin Minh City (Saigon) located in the South of the country with a metro population of 9 million residents and Hanoi in the North with also close to 9 million residents.
This country has always been visited by a decent amount of foreigners, however in last 10 years this trend has been becoming more and more popular and tourism has been booming there especially since the end of Covid.
Vietnamese in the primary language spoken by locals. English is not so popular. Not many people speak good English or English in general and this can be a problem for any Westerner. It really is a hit or miss. Some people speak English and some don’t.
The main cities such as Ho Chi Minh City, are very well constructed and very modern with very nice malls, high rise buildings and condos, paved roads and very good transportation system.