One of them is a beauty of the nature. Unlike Bangkok, Vientiane still has much nature, though it is a capital, especially along with Mekong River. In addition to the nature, there are parks and bars that allow us to enjoy the view with confortable environment or with some cocktails.
Even though the country is regarded as a developing country, the puvlick transport is well organized. Therefore, if you want to go to rural area, it is easy to get there with cheap public bus.
For example, there is a wonderful place named Vang-Vieng. It takes 6 hours from the capital, by bus. The place is famous for the glorious view of nature. The buses usually go to the rural town, and then you can take local tuk-tuk (bike taxi) to go to any place you want to go. Thus you can go to wherever you want to go without international car lisence.
The greatest thing you can see in Laos, however, is not the nature or transportation but people there. People in Laos are all kind and warm. Even in the market, you rarely see people who try to grab your bag or ask for money. Even though you are stranger in the country, people help you to travel comfortablly; some people help to stop tuk-tuk for us, or some people teach the beautiful place you had better go.
These are reasons why the country is now popular to travel around. Why don't you start thinking about going there and meet beautiful nature and people?
Laos, Somusanouk village by Hirono Takigawa