Fast and Easy Access. Visit one of the most famous landmarks with a pre-booked entry ticket and start exploring right away. Your ticket will be sent to you by email 24 hours before your visit — please remember to check your inbox and spam folder. Explore a 10th-Century Fortress – Discover the architectural features and defensive structures of this medieval stronghold. Birthplace of a Nation – Visit the reputed birthplace of Portugal's first king, Afonso Henriques. Panoramic Views – Enjoy sweeping vistas of Guimarães and the surrounding landscapes from the castle's towers. PLEASE NOTE: IT IS NOT POSSIBLE TO SKIP OR BYPASS SECURITY CHECKS AT THE ENTRANCE. DURING THE HIGH SEASON, WAITING TIMES FOR SECURITY MAY TAKE UP TO ONE HOUR.