Ubon Ratchathani city pillar shrine
The city pillar shrine is right next to the National Museum, in a large park that occupies the center of the city. The pillar and its shrine are relatively modern, built in the early 1970s as part of a government campaign to have pillars in all provincial capitals.
You'll find people making offerings to the shrine, hoping for some favor, at almost any time of day. There is no cost to enter, but you must take off your shoes before going inside.