The spider species Araneus diadematus is commonly called the European garden spider, diadem spider, cross spider, or crowned orb weaver.
It is an orb-weaver spider found in Europe (and North America).
Individual spiders' colourings can range from extremely light yellow to very dark grey, but all A. diadematus have mottled white markings across the dorsal abdomen, with four or more segments forming a cross.
Adult females range in length from 6.5 to 20 mm (0.26 to 0.79 in), while males range from 5.5 to 13 mm (0.22 to 0.51 in) - so this example is likely to be female ...