A long-closed portion of Egypt’s Nile River reopened to cruise ships this week, paving the way for new, longer itineraries along the legendary waterway.

The 465-mile stretch between Cairo and Luxor has been closed for at least 15 years due to security concerns and unpredictable water levels. Its opening will allow cruise vessels to sail all the way from Cairo to Aswan — a 600-mile stretch that is chock full of ancient ruins.