Vat Visoun Temple Published 20 October, 2023 at 600 × 339 in Best Laos Tours: Discover Laos in 6 Incredible Days Vat Visoun Temple is the oldest temple in Laos but still a must see site The history surrounding Vat Visoun Temple in Luang Prabang is very long as one would imagine with the oldest Buddhist Temple in Laos.