Not far from Mykonos lays the island of Delos, the 'island of light'. According to mythology, Zeus, the King of the Gods, fell in love with a beautiful Titaness named Leto, but when his wife discovered his infidelity, she forbade Mother Earth to give Leto refuge. Lonely and pregnant, Leto wandered the earth until the island appeared amid the waves so that she would have a place to give birth to twins: Artemis, goddess of the hunt and virginity, and Apollo, god of truth and light. Pilgrims from all over Greece came to pay their respects, creating one of the wealthiest and most revered shrines of antiquity. After reaching the island by chartered boat, you'll discover among the ruins, one of the island's most spectacular relics, the Avenue of the Lions, where perfect replicas of the 7th century Naxian marble beasts crouch in silent vigilance at the sacred lake where Leto gave birth to her twins. Beyond, a path leads to Mt. Kynthos, where Zeus observed the event. There are many other interesting monuments which you'll be able to admire during your visit. Note: Tour involves approximately 1/2 mile of walking on uneven gravel terrain. Not recommended for guests on wheelchairs. Delos is explored on foot and the two-hour walk is over uneven terrain and the steps can be slippery. Temperatures can reach extreme highs during summer months; we recommend that you drink a lot of water, use suitable sun protection and dress in layers. The boat ride between Mykonos and Delos can be rough at times, depending on sea conditions. Due to time constraints, this tour is not available for Norwegian Spirit guests on sailings departing from Venice. Delos is closed on Mondays so tour will not be available for guests on the Norwegian Spirit sailings of May 22 and August 2, 2012.