Glencoe lies in the western Highlands of Scotland, where a long, steep-sided valley cuts through mountains shaped by ancient volcanic activity and glaciation.

From the Caribbean Sea on one side to the Pacific Ocean on the other, Central America is home to lush rainforests, volcanic peaks, and vibrant coastal towns.

Nestled along the south bank of the Danube, this historical Austrian city bursts with charm. A favorite stop on European river cruises, the city's most famous attraction is Melk Abbey, which dates back to the 11th century. The original Benedictine structure was lost to fires and foreign invasion, then rebuilt during the 18th century in lavish Baroque style, including a library and inner church covered in magnificent frescoes and gilded fixtures.

Dover, the capital of Delaware, is a charming city that blends rich American history with vibrant modern culture. A must-visit for history buffs is the First State Heritage Park, often called "Delaware's first urban park." This park connects many of Dover's historic landmarks, including Legislative Hall, the state's Capitol building, where you can explore Delaware's political past.

Tunis' white-washed, blue-shuttered buildings hide a treasure trove of Arabic and Ottoman art. Inspect illuminated manuscripts from the Koran, follow the twists and turns of the fascinating old Medina (inner city), marvel at the ornate Palace of Dar Ben Abduallah and the magnificent Djamaa-Ez-Zitouna Mosque, whose 184 columns were "recycled" from the rocky ruins of Carthage.