This private archaeological collection housed in the basement of a Repsol gas station (the one on the west side of the intersection, not the east side) is fascinating, with some 2000 ceramic pieces on display (curated from a collection owned by Italian immigrants) that certainly don’t belong under a gritty gas dispensary.
Have a look at the bird-shaped whistling pots, which produce clear notes when air is blown into them (ask the curator to show you). Superficially the pots are very similar, but when they are blown each produces a completely different note that corresponds to the calls of the male and female birds. The mummified eight-month-old female fetus, born premature, is estimated to date from AD 250 and will blow your mind as well.