I can only comment on architecture, but I studied in Toledo, Spain for 4 months and took a class on the art and architecture of the city. It's known as the "City of the Three Cultures" due to the Christian, Arab, and Jewish influence on life/art/culture. Muslims were not all expelled when the city was reconquered, and because of this their influence is more noticeable. I can give a few examples. You see a lot of Moorish/Arab architectural motifs, like arches with "lobes" on buildings, especially church towers.

Example 1 This is the Tower of Saint Thomas, which I wrote a paper about. You can see the rounded arches, and the "lobes" (as they are roughly translated) above the arches.

Example 2 This is the Church (former mosque) of Christ of the Light. It was recently discovered inside a newer structure and then restored. You can again see the circular arches, the lobes, and the brickwork above actually used to be a complete Arabic inscription.

Example 3 Another part of la Mezquita de Cristo de la Luz

Example 4 This is a former synagogue, now known as Santa Maria la Blanca. You can see again the arches, and the very intricate molding around the tops of the columns.

Example 5 Another synagogue, El Transito, showing the intricate arches and moldings.

So many of the older buildings show the Arab influence, in color, style, and in the various little motifs and the ways they are expressed. It's far more impressive if you can visit because you can directly compare the Arab influenced structures with the later Christian ones. You can see the differences in the components, because they all have arches, windows, decoration, etc; but it is all done in a different way. Hope that helps, I know that these same architectural influences are found all over southern Spain, this was just the extent of my knowledge. I loved that class and I'm glad I had this chance to recount it.

Many landmarks have arabic names. Practically all city and national park names that start with "Al", are arabian.