[2] It was soon moved to the Casa del Platero and then to the Palacio de los Ministerios, where it remained until 1932.
Visitors enter the museum through a modernist facade on the Paseo del Prado, and pass to the first floor where former courtyards (now exhibition halls of the Naval Museum) are covered by spectacular stained-glass roofs with naval and decorative motifs made by Maumejean (a family glass-making business which had a branch in Spain).
At weekends a doorway onto the grand staircase of Navy Headquarters is opened to allow visitors to appreciate the architecture.
The rock, which weighs one gram, was put on display in 2009, to mark the 40th anniversary of the first Moon landing.
[5] The museum also displays a collection of Ming ceramics rescued from the shipwreck of the San Diego.