Karlsruhe, located in southwestern Germany near the French border, is a city known for its unique radial layout, rich cultural life, and role as a hub for law and technology. Founded in 1715, the city was planned around the iconic Karlsruhe Palace, with streets radiating outward like the spokes of a wheel.

The Snæfellsnes peninsula in western Iceland is sometimes referred to as "Iceland in Miniature" thanks to the many national sights found in the nearby area. The diverse landscape includes fascinating vistas of glistening fjords, dramatic volcanoes, and rugged seascapes.

The Treasure Coast area, from Jupiter north to Vero Beach, can be considered to be "sleapy." The pace of life is slow here, which is why people live and visit. Just because the pace is slow, however, doesn't mean nothing happens here. There are plenty of events, too, that are worth driving to attend.

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.

Nestled in the lush landscapes of western Cuba, Viñales offers an enchanting escape into a world where time seems to slow down amidst breathtaking natural beauty. Renowned for its striking limestone formations, known as mogotes, the Viñales Valley is a UNESCO World Heritage Site and a paradise for nature enthusiasts. The valley's dramatic scenery provides an ideal backdrop for hiking, horseback riding, and exploring underground caves like the Cueva del Indio.

This coastal route runs between the Gulf of Alaska and Puget Sound, and is a popular route for cruise ships. Cruise passengers can expect to see a breathtaking amount of wildlife, as well as Ketchikan, Wrangell, Prince of Wales, Sitka, Juneau, Haines, Skagway and Glacier Bay.