Denver, Colorado, known as the “Mile High City” for its elevation exactly 5,280 feet above sea level, offers far more than a mountain backdrop. It’s a city where old saloons, Victorian homes, and vintage brick warehouses sit beside sleek skyscrapers and buzzing food halls. While the nearby Rocky Mountains are visible from almost anywhere in the city, places like City Park and Washington Park offer wide green spaces right in town.

Mahón, the capital of Menorca, one of the Balearic Islands in Spain, is a charming and historic city that offers a blend of Mediterranean beauty, rich culture, and vibrant history. Located on the eastern coast of the island, Mahón boasts a picturesque harbor, which is one of the largest natural harbors in the world.

Vilnius, the charming capital of Lithuania, is a city where historical grandeur meets vibrant modernity. The heart of Vilnius is its UNESCO-listed Old Town, one of the largest and most well-preserved medieval city centers in Europe. Wander through its cobblestone streets and admire the stunning Baroque architecture.

Evidence of our nation's birth abounds in Boston, a hub of revolution that is essentially the oldest city in the United States. Visitors are compelled to walk the 2.5-mile Freedom Trail around the city center, and bear witness to 16 historical locations related to the history of America.

Namibia, in southwestern Africa, is a land of dramatic landscapes and striking contrasts. From the towering sand dunes of the Namib Desert to the rugged mountains and deep canyons of Damaraland, the country offers some of the continent’s most unique scenery.