Until 31 December 2009. The most important collection of meteorites in Spain is currently on show in the National Natural Science Museum. Consisting of over 300 examples, aged approximately 4.5 billion years, the museum also provides historical documentation about their fall to earth. First assembled by the Marquis of Socorro in the second half of the 19th century, the collection has grown over the years thanks to donations from private individuals who witnessed meteorites falling and retrieved samples, including the baffling case of a meteorite which fell outside Madrid in 1994 and doesn't match any geological criteria as yet known about.
Tues - Fri 10.00-18.00, Sat 10.00-20.00 (10.00-15.00 in August) & Sun 10.00-14.00.