What kind of spider is this?

I went to greece and saw these spiders everywhere... they were most active at night and some were as big as my hand.. some my palm... they were so creepy.. i went into a church at night to light a candle once i went in and made a noise with my heel hitting the floor i saw the walls move(it was the spider jetting... show more I went to greece and saw these spiders everywhere... they were most active at night and some were as big as my hand.. some my palm... they were so creepy.. i went into a church at night to light a candle once i went in and made a noise with my heel hitting the floor i saw the walls move(it was the spider jetting away from the noise) are they deadly? what are they?

http://i20.photobucket.com/albums/b250/S84/ryrtytrytyty.jpg
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