The museum located below the temple opened in 1961. Its main goal is to celebrate and promote the work of Gaudí. It also displays the original plans and sketches for the construction of Sagrada Familia.
Official Website http://www.sagradafamilia.org/en/museum/
Address 16B Plaça de la Sagrada Família, Barcelona 08013, Spain
Coordinates 41°24'11.217" N 2°10'27.306" E