More than 300 days of sunshine annually (more than San Diego or Miami Beach) earns Denver high marks with visitors and make sunglasses a must. For the city's most energetic shopping, dining and entertainment spots, point your compass in the direction of Larimer Square, the Tivoli, LoDo and the 16th Street Mall.

Natural wonders await you in the steaming, geothermally active North Island city of Rotorua, New Zealand. Pohutu Geyser erupts several times per day, and blistering mud pools provide a truly unique sightseeing experience. When in Rotorua, tourists also visit its living Maori village, as well as Te Puia (New Zealand Maori Arts and Crafts institute), where weaving and woodcarving is featured.

Tropical vibes, gorgeous beaches, and exotic seascapes await you in Phuket, Thailand's largest island. 32 smaller, rainforest-adorned islands surround Phuket and demand to be explored by boat. On land, a thriving nightlife awaits, not to mention tucked-away temples, bustling public markets, and enticing eateries.

Sisimiut, Greenland's second-largest city, offers a captivating glimpse into Arctic life and stunning natural beauty. Nestled on the shores of the Davis Strait, Sisimiut is renowned for its striking landscapes and rich cultural heritage.

Panama City, the vibrant capital of Panama, is a city where modernity meets history in a striking blend. As you stroll through its lively streets, the futuristic skyline is crowned by the awe-inspiring Panama Canal, an engineering marvel that has shaped global trade for over a century. The canal's Miraflores Locks Visitor Center offers an up-close look at the massive ships navigating through this critical waterway, complete with panoramic views.