Ilha Grande, an island off the coast of Rio de Janeiro state, is a place where tropical forest and coastline meet in striking harmony. Once a pirate hideout and later the site of a penal colony, it has evolved into one of Brazil’s most remarkable island destinations. With no cars allowed and no large resorts, the island moves at a different pace, where footpaths and boats are the main ways to get around.

Coursing through 10 countries, the Danube is the second-longest river in Europe. This waterway, lined with fortresses and castles, rises in Germany's Black Forest and runs for 1,770 miles to the Black Sea. The Danube is an essential commercial thoroughfare for central and southeastern Europe, and several river cruise companies sail vessels on it year-round. Destinations along this river include Vienna, Budapest, Passau and Bratislava.

Mount Kenya, the majestic volcanic mountain located in central Kenya, is a natural wonder that captivates visitors with its dramatic landscapes and rich biodiversity. As Africa's second-highest peak, standing at 5,199 meters (17,057 feet), Mount Kenya offers an array of trekking routes that lead adventurers through lush forests, alpine meadows, and glacial valleys.

Kentucky is known worldwide for the Kentucky Derby, but there’s far more to this southern state than fast horses and fancy hats. Louisville, the largest city, pairs old-world charm with modern energy. Visitors can stroll along Museum Row on Main to explore the Louisville Slugger Museum & Factory or dive into boxing history at the Muhammad Ali Center, dedicated to the life and legacy of the Louisville-born champion.

Gibraltar is located in southern tip of Spain, on a tiny peninsula. It is governed by the British and named after the Rock of Gibraltar, which is located on its east side. The territory is mainly used as a shipping port, and a port-of-call for cruise ships.