Museo Sol del Niño, Interactive children's science museum in Mexicali, Mexico.

The Museo Sol del Niño occupies the former La Jabonera del Pacífico, a cottonseed-processing plant warehouse, on Alfonso Esquer Sández in Mexicali's Zona Industrial. Its exhibition area covers 4,244 square metres of a site over 30,000 square metres. Permanent rooms include Ciencia Mágica, Plaza del Sol y el Agua with its climbing wall and gyroscope, Ciencias de la Tierra, Óptica: Luz y Color, Más allá del cielo, and the outdoor Casa de la Energía.

The museum opened on September 21, 1998, in a building that formerly housed La Jabonera del Pacífico, an industrial plant warehouse that processed cottonseed into oils, vegetable shortening and soaps. It was inaugurated by President Ernesto Zedillo Ponce de León, Governor Héctor Terán Terán and Mayor Eugenio Elorduy Walter, under the leadership of María Elena Blackaller de Elorduy. In its first year it received over 270,000 visitors, half of them children, and from 1998 to about 2016 some four million people had visited. The building is being considered by INAH for recognition as a historical monument.

The institution promotes scientific literacy and environmental awareness through hands-on learning experiences, offering workshops, educational programs, puppet theater performances, and temporary exhibitions that encourage creativity and critical thinking among children and families in the region.

The museum operates Tuesday through Sunday from 10:00 AM to 6:00 PM, with general admission costing 60 pesos, IMAX tickets at 75 pesos, and a combined package for 110 pesos, featuring amenities like accessibility for disabled visitors, parking, cafeteria, gift shop, and guided tours.

Outside the main building stands Locomotive 2107, a train engine that once hauled people and materials from central Mexico to Mexicali, pulling more than 12 cars and loads up to 57,000 pounds. It is a piece of the city's railway history kept on the museum grounds.