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.

Cardiff, the capital of Wales, is a city brimming with history, culture, and modern vibrancy. At the heart of its historic charm stands the Cardiff Castle, a magnificent structure that dates back to Roman times and has been a centerpiece of Welsh history for centuries. Explore the castle’s stunning medieval architecture and lavish interiors, or take a walk around the castle grounds, which offer picturesque views of the city skyline.

Bulgaria is a republic in southeastern Europe. The capital and largest city is Sofiya. Bulgarian culture has been influenced successively by Byzantine, Greek, Russian, and Western cultures.

Belgium may be compact, but it offers a surprising variety of experiences shaped by centuries of shifting borders, artistic innovation, and culinary tradition. In Brussels, the Grand Place sets the stage for history and architecture in one square lined with ornate guild halls. The city is also home to the European Union’s headquarters, surrealist painter René Magritte’s former house, and a lively comic book trail that winds through murals of Tintin and other Belgian icons.

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.