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.

Victoria de Durango rises on a high plateau Mexico’s Sierra Madre Occidental, founded in 1563 by Francisco de Ibarra. Its streets trace layers of history: the historic center holds the most listed buildings in northern Mexico and remains a notable stop on the Camino Real de Tierra Adentro, now a UNESCO World Heritage route.

Nestled on the southern tip of California's Baja Peninsula, there's a feeling of peace on Cabo San Lucas, Mexico. Find your own private sand dune and bask in the sun. Walk along the famous Playa del Amor or explore Cabo's unique rock formations that are found in almost every cove. For a special treat, stop and watch artists create black coral jewelry.

Abu Simbel, in southern Egypt near the border with Sudan, is one of the most awe-inspiring archaeological sites of the ancient world.

The River Nile, most often associated with Egypt and its ancient civilizations, actually flows through eight other countries including Uganda, Ethiopia, Sudan, and Kenya. It is formed by two major tributaries, the White Nile and Blue Nile, and is considered by many to be the longest river in the world when measured from its source waters in Rwanda and Burundi.