Those interested in sightseeing and visiting Granada can contact different agencies. However, you should keep in mind that if you want to visit the Alhambra, you should book well in advance because there are limited spaces. One agency that can arrange tickets for the Alhambra and even prepare a tour of the city for you is Btravel:

Phone number for contact: +34 958 653 601 / 696 922 058

Granada Tours:

Granada has numerous places to visit, both the province and the city. From the Alpujarra, a spectacular area with dozens of white villages, through the Costa Tropical with Almuñecar, Motril and Salobreña, the Sierra Nevada National Park which houses the highest peaks of the Iberian Peninsula, the cave houses of Guadix or the many monumental and tourist attractions of the city of Granada itself. Among them are the Alhambra, the Cathedral, the Cartuja Monastery, the Abbey of Sacromonte, the Monastery of San Jeronimo, the Basilica of San Juan de Dios, without forgetting the Science Park, the Arab baths, the flamenco performances in Sacromonte or going for tapas in Granada (free with the drink, the best and most abundant in Spain). For more information, visit the official website of the Granada City Council: Granada City Council tourism.