San Diego Model Railroad Museum

The San Diego Model Railroad Museum is a model railroad exhibit in San Diego, California. At 27,000 sq. ft., it is the largest indoor such exhibit in North America, and one of the largest in the world. The museum is on the lower level of the Casa de Balboa on the Prado in Balboa Park.^[2] The museum is open Tuesday - Friday 11 am to 4 pm, Saturday and Sunday 11 am to 5 pm

• http://en.wikipedia.org/wiki/San Diego Model Railroad Museum