Spaniard there; there used to be UFO's in the 70's... coincidentally near the US military bases ;)

There was an infamous one in the Canary Islands.

Also, weird events under Huelva. A few paranormal, but some of them not religion/spiritual based.

If the aliens were real, their technology for sure would look as magic for humans. No, forget flying saucers or whatever. These kind of civilizations would have totally different ways to travel thousands of kilometers across the galaxy.

Teleporting "magic" would just be mundane technology for them.

A simple AM radio receiver with a wire, a coil and a magnet would just be sorcery for even the upper elite from the medieval times. And today an Elementary kid can build a simple receiver with junk from a junkyard or scraps from a workbench.

EDIT:

BTW, I forgot: on paranormal stuff on Huelva, I meant something like this:

https://0x0.st/Pr1Y.txt

I don't care about ouija's, haunted houses and whatever related to either ghosts or to religious stuff.