No, it's not Islamic architecture.
http://www.sacred-destinations.com/france/fontevraud-abbey
http://www.sacred-destinations.com/france/fontevraud-abbey
http://www.pitt.edu/~tokerism/0040/syl/christian.html
See the images here.
http://www.google.com/search?hl=en&client=firefox-a&hs=mZq&rls=org.mozilla:en-US:official&q=basilica+architecture&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&biw=1236&bih=799&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=Ne7wT8a4BonI2AX_2-S4Cg
http://www.google.com/search?rlz=1C1GGGE_enUS379US379&aq=f&sugexp=chrome,mod=10&sourceid=chrome&ie=UTF-8&q=early+christian+architecture
Byzantine
http://www.google.com/search?hl=en&rlz=1C1GGGE_enUS379US379&q=byzantine+architecture&oq=byzantine+architecture&gs_l=serp.1.0.0i7l4j0l6.30156.31673.0.34280.9.9.0.0.0.0.247.1048.5j1j3.9.0...0.0.-3-GqHyNOr8
Islamic
http://www.google.com/search?hl=en&rlz=1C1GGGE_enUS379US379&q=islamic+architecture&oq=islamic+architecture&gs_l=serp.3..0i7l6j0j0i7j0i10j0i7.22709.23723.0.24415.7.7.0.0.0.0.237.908.3j2j2.7.0...0.0.Vr_Zf1gTQvs
AND ~~> http://en.wikipedia.org/wiki/Alhambra