The Laguna de Nejapa is a small volcanic crater lake on the western outskirts of Managua, less visited than the Tiscapa Lagoon but arguably more atmospheric. The crater rim gives views over both the lake and the surrounding volcanic landscape — a series of low hills and cinder cones that remind you that Managua was built on one of the most geologically active stretches of land on earth.
Access requires a short walk down to the water; local families swim in the lake on weekends, which gives it a more relaxed feel than the more developed Tiscapa. The drive from central Managua takes about 20 minutes. It pairs well with a visit to the Acahualinca footprints museum on the same side of the city, making a half-day exploring the western and older districts of Managua.