The museum in this wooden building next to the stadium won't hold your attention very long with its pictures of old beauty queens, preserved lobsters and collection of John Grisham novels, but there are a couple of pre-Columbian pots. If you come at the end of the day, you may be able to watch locals jamming in the music room.
If it's not open, ask in the ²¹±ô³¦²¹±ô»åò¹ (mayor’s office) next door.