Roma. The Eternal City. Whatever you call Rome, it stands alone as Italy's most visited destination. The third most populated city in the European Union, Rome boasts ancient sites, yet has a modern flair — an exhilarating mix of the Old World and the new.

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

Welcome to Venice, with its network of canals, rich history and composition of over 100 small islands in the Adriatic Sea. Fine art, stunning architecture, white limestone bridges, moving about via watercraft... Venice is a singular experience and an astonishing masterpiece of civilization.

Costa Rica is a Central American tropical paradise beyond compare. The wildlife is colorful and memorable, from toucans to spider monkeys to sloths. Volcanoes, ziplines, and prime cycling, hiking and surfing opportunities are there for active travelers. For more relaxed vacationers, beaches and vibrant nightlife—from rooftop bars to romantic dining—await.

Regensburg, Germany’s medieval gem, will transport you to a bygone era. The site of both Celtic and Roman settlements, Regensburg flourished in the Middle Ages.