Its legacy as the former imperial capital of Vietnam is just one of many reasons to visit Hue. For more than a century, the emperors of the Nguyen dynasty (1802-1945) ruled from the Forbidden Purple City, the innermost enclosure of the citadel. Today, this complex is designated as a UNESCO World Heritage site and draws millions of visitors each year.

Copán, Honduras, is a hidden gem in Central America that beckons travelers with its extraordinary blend of ancient history, lush landscapes, and vibrant local culture. Known as the "Athens of the Maya," Copán is home to one of the most significant and well-preserved archaeological sites of the Mayan civilization, a UNESCO World Heritage Site.

Toulon, a vibrant port city on the French Riviera, is a hidden gem waiting to be explored. Known for its deep natural harbor, Toulon has long been a significant naval base for France, and the city's maritime heritage is still very much alive today. Visitors can explore the bustling Toulon Harbor, where yachts, fishing boats, and naval vessels coexist in a lively display of seafaring life.

Theodore Roosevelt National Park, tucked into the rugged badlands of western North Dakota is where a young Theodore Roosevelt came to recover after the loss of his wife and mother in the same day. He bought a ranch, rode the open plains, and found the resolve that would later define his presidency. Today, the park named in his honor preserves that same wild spirit. Visitors can still see Roosevelt’s original Maltese Cross Cabin near the park's entrance and walk trails he once rode on horseback.

Cairns is the majestic entrance to Australia's Great Barrier Reef. This warm, tropical destination is located in Far North Queensland. Must-see attractions in Cairns include the Tjapukai Aboriginal Cultural Park, which educates tourists about indigenous peoples, and restaurant and bar-dotted Cairns Esplanade, which has a lagoon for swimming.