There are duplicated airports at Barcelona (LEBL) and Girona (LEGE). Also LEGA, LEGR, LEZL, LERT, LETO, LEST and possibly others as well.
The lower limits of all class E airspace around Alicante, Valencia, Zaragoza and I think most other places is incorrectly shown as 300m AGL.
Edit: Add LEMP and LEZG to list of duplicated airports.