Crater Lake National Park, Oregon, offers a breathtaking display of natural beauty centered around the deepest lake in the United States. Formed by the collapse of a volcanic caldera, Crater Lake is renowned for its stunningly clear blue waters, which are the result of rain and snowfall filling the caldera. The lake's unique color and clarity are due to its depth and the purity of its water, making it a visual marvel that attracts visitors year-round.

Vis, a charming island city in Croatia's Dalmatian region, offers a serene retreat with its blend of historical allure and natural beauty. Known for its historical significance, Vis boasts remnants of its Greek and Roman past, including the well-preserved fortifications and ancient ruins. The city itself is a captivating blend of Venetian and Austro-Hungarian architecture, with quaint streets and lovely waterfronts that invite leisurely exploration.

Long regarded as one of the freest-thinking college towns in the U.S., Ann Arbor is home to the University of Michigan, the Gerald R. Ford Presidential Library and Domino's Pizza. While you're in Ann Arbor, be certain to see the city's many fascinating historic buildings; the Kelsey Museum of Ancient and Medieval Archaeology; and Kerrytown (a diversity of specialty shops and eateries in restored 19th-century buildings close to the Farmers Market).

Melbourne, Florida, is a charming city that combines coastal beauty with a rich tapestry of cultural and recreational activities. Nestled along the Atlantic coast, Melbourne offers pristine beaches and vibrant outdoor experiences. The Historic Downtown Melbourne is a delightful area where you can explore unique shops, dine at quaint restaurants, and soak in the small-town charm.

Georgia's second largest city, it is located between the Caspian and Black seas. Dating back to at least the sixth century, it has outstanding museums.