New Orleans is unlike any other city in the United States. Founded in 1718, it carries layers of French, Spanish, African, and Caribbean influence that can be felt in everything from its architecture to its street music. The French Quarter, the oldest neighborhood in the city, is full of iron-laced balconies, gas lamps, and narrow streets that echo with the sounds of live jazz.

Ancient history comes alive in Athens, the capital of Greece. Gaze in wonder at the Acropolis and its iconic crown, the Parthenon. Take a deeper dive into the past and visit both the Acropolis Museum and the National Archaeological Museum, which house fascinating artifacts from this ancient city.

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.

Reshaped by volcanic activity, the rugged yet enchanting Santorini beckons all seafaring souls in the Aegean Sea. Visitors to this breathtaking and romantic Cyclades archipelago will gaze at the whitewashed cubiform houses sitting cliffside and hovering over the water.

A favorite for many cruise-goers and tourists, Ketchikan, Alaska, is a charming city located near the state’s southeastern edge.