The Tazumal ruins at Chalchuapa, about 15 km west of Santa Ana, are the best-preserved pre-Columbian site in El Salvador. The main structure is a stepped pyramid about 24 metres high, and the site contains ball courts, drainage channels, and altar platforms spread across a modest but well-maintained archaeological zone.
The adjacent museum displays ceramics, jade, and figurines recovered from the site, with good context on the Pipil and Maya civilisations that used Tazumal over the centuries. Half a day is enough to see both the ruins and the museum. Open Tuesday to Sunday; small entrance fee. Chalchuapa, 15 km west of Santa Ana.