If you are planning to visit the Alhambra and Generalife, be warned that the queues can in themselves become monumental and, in the summer particularly, you run a serious risk of not being able to get in until the next day. This is because the number of visitors is restricted to 400 every half hour. So, it is a good idea to book in advance, especially as this is easy to do. You can buy tickets over the Internet, or from any branch of the Banco Bilbao Vizcaya, one of the largest and most widespread banks in Spain, with branches in Paris, London, Milan and New York. If you reach Granada without having bought tickets, you will find it easier to go to the BBV branch office at Plaza de Isabel la Católica, 1, during normal opening hours (until 2.00 p.m. for most banks) than to go directly to the ticket office of the Alhambra. To make it even easier, the bank has a telephone service whereby you can buy tickets up to a year ahead: Int'l + 34 91 537 91 78 from outside Spain or 902 22 44 60 from within Spain.