The skyline of Erfurt is shaped by dozens of churches, monasteries, and convents thrusting their pointed steeples upward to the sky. In the Middle Ages, Erfurt was known as "Thuringian Rome" because of its religious orders. The impressive twin churches on the Domberg (Cathedral Hill), the Roman Catholic St. Mary's Cathedral (14th century) and the Roman Catholic Parish church St. Severus with a flight of 70 outdoor steps leading from the Cathedral Square up the hill to the churches.

Sucre, Bolivia’s constitutional capital, is a city steeped in history and colonial charm. Founded in the 16th century by the Spanish, it played a pivotal role in South America’s independence movements, earning its place as the birthplace of the Bolivian Republic.

Agrigento, located on the southern coast of Sicily, is a city steeped in history and renowned for its ancient Greek ruins. The crown jewel of Agrigento is the Valley of the Temples, a UNESCO World Heritage Site and one of the most spectacular archaeological sites in the Mediterranean. Visitors can marvel at the remarkably preserved Temple of Concordia, which dates back to the 5th century BC and is considered one of the best-preserved Greek temples in the world.

San Pedro de Atacama, a small town in northern Chile, sits at over 2,400 meters above sea level in one of the most geologically diverse areas on Earth. Surrounded by volcanoes, salt flats, geysers, and ancient lava flows, it has long served as a gateway to the Atacama Desert. This desert is the driest non-polar place in the world, where some weather stations have never recorded rainfall.

One of the major rivers of the Iberian Peninsula, the Douro in north-central Spain and Portugal just might be the world's most beautiful wine region. Most of the river on the Spanish side isn't navigable, so river cruises generally travel roundtrip from Porto, on the coast of the Atlantic.