Ancient city of Wiang Kum Kam was lost from historical records in 16th century. The almost 900 years old city was rediscovered in 1984 near Ping river, 6 km from the Chiang Mai’s moat surrounding the tourist center.
You can visit the area dotted with a few ruined temples in tuk tuk or hire a pony carriage at the front of main gate.
Pha That Luang is a stupa. It is the most important monument in Laos. The stupa was built in the mid-16th century when Lan Xang capital was moved from Luang Prabang to Vientiane.