The Jardín Botánico La Laguna (La Laguna Botanical Garden) sits in an ancient volcanic crater in the municipality of Antiguo Cuscatlán, about 20 minutes from the city centre. The crater's bowl shape and the central lake create a peaceful green space that feels very distant from the surrounding city. Collections of orchids, tropical trees, cacti, and aquatic plants are spread through the grounds.
Open Tuesday through Sunday, 9am-5:30pm. Admission is modest. The gardens are best visited mid-morning or late afternoon. Bring walking shoes — the crater rim and interior paths involve some uneven terrain. A taxi from the historic centre costs a few dollars.