[R] any european maps

[juli g. pausas]

Dear all,
I've seen that there are some maps, or at least costlines in R. The oz 
package is the map of Autralia and in the fields package there is a US 
map and a world map. This world map allows to select smaller sections 
such Europe:

library(fields)
world(xlim=c(-10,18),ylim=c(36,60))

However, at this scale the map is quite crude (and several important big 
islands are messing).
My question is: is there any more accurate map of Europe available out 
there?
(I'm specially interested in the Iberian Peninsula)

Thanks in advance

Juli