Facebook has made a lot easier to download whole album at once from facebook. Follow these simple steps:

  1. go to your profile/timeline
  2. click on photos

  3. click on albums

  4. choose your album by clicking
  5. click on gear icon at the side of edit|tag

  6. select Download Album

  7. press continue
  8. wait until you are notified

  9. open notification panel

  10. right click on the album's notification and open link in new tab

  11. click on save/start download
  12. boom! Wait for completion

  13. Unzip/ extract your album and see your awesome photos. :P