Istanbul is a city built on layers of empire. Spanning two continents, it was once the capital of three major empires: Roman, Byzantine, and Ottoman. Visitors walking through the Sultanahmet district can witness this timeline firsthand, from the Roman-era Hippodrome to the Byzantine mosaics of Hagia Sophia, and the towering minarets of the Blue Mosque. At nearby Topkapi Palace, rooms still display the jeweled swords, ceremonial robes, and handwritten Qurans once used by Ottoman sultans.

Rabat, the capital of the kingdom of Morocco, is located on the edge of the Atlantic Ocean on the left bank of the Bou Regreg Estuary. A city of trees and flowers, Rabat combines peace, beauty and Serenity, and is steeped in history.

Montenegro, set along the Adriatic Sea, draws travelers with its dramatic landscapes and layered history. The Bay of Kotor, often mistaken for a fjord, is actually a submerged river canyon surrounded by steep cliffs and medieval towns. Kotor itself, a UNESCO World Heritage site, is enclosed by ancient fortifications that visitors can climb for panoramic views stretching from terracotta rooftops to the sea.

Plovdiv, one of the oldest continuously inhabited cities in Europe, carries over 8,000 years of history layered into its streets. The Roman Theater, still in use today, was discovered by accident in the 1970s and now hosts operas and concerts overlooking the Rhodope Mountains. Nearby, visitors can walk the remains of a Roman stadium buried beneath the main pedestrian street, where modern shops and cafés stand above ancient foundations.

Located just north of Chugach National Forest and nestled in an inlet of Prince William Sound, charming Valdez is a small Alaskan city known for its proximity to stunning glaciers, canyons, forests, and natural wildlife. Highlights include Valdez Glacier Lake, Keystone Canyon, and the Valdez Museum. The region's untouched natural beauty will astound you on your next Alaskan cruise!