Thakhek is a rather quiet town located along the mighty Mekong river. This province was founded under the French so as you venture around the tiny streets you will find them lined with French villas. The name Thakhek, which means “Visitor’s Landing”, is relatively new, but is a reference to the town’s importance as far back as the eighth century. The best thing to do in Thakhek is to visit the Mahaxai Caves. These limestone karst formations are a great place to spend a day. There are many caves here, but the most visited one is the Tham En. There is also a small lake inside that glows emerald-green highlighting the limestone formations. Another attraction here is the Wat Pha That Sikhotabong. One of the holiest pilgrimage spots (and tourist spots), it is seen best at sunset.