Southeast Spain's seaport of Cartagena is a large naval base on the Mediterranean coast. The city was founded in 220 B.C. and boasts Roman ruins, mosaics and murals.

One of San Cristobal Island's most popular visitor sites is Cerro Brujo, with its expansive white sand beach and a lagoon that locals once used as a salt mine but now offers excellent snorkeling opportunities. Another must-see is Kicker Rock, a fascinating rock formation that looks like a boot from one angle (hence its English name) and like a sleeping lion from another (thus its Spanish name, Roca León Dormido).

On coastal Iceland, the globe's northernmost capital, Reykjavík, invites visitors to discover its unique charms. Iceland is rife with natural wonders: geysers, geothermic spas, waterfalls and the spectacular Northern Lights. Reykjavik, dating back to 870 AD, offers world-class museums, restaurants, shopping and nightlife.

The second-biggest state in America, Texas is dotted with several appealing cities, including music and food-focused Austin, bustling Houston, arts and culture-rich Dallas-Fort Worth, and San Antonio, where the River Walk is not to be missed.

La Digue, the fourth-largest island in the Seychelles, offers a quintessential tropical paradise experience. Known for its idyllic beaches and charming laid-back atmosphere, La Digue is a haven for nature lovers and those seeking a serene escape. The island’s most iconic beach, Anse Source d'Argent, is renowned for its stunning granite boulders and crystal-clear waters, making it one of the most photographed beaches in the world.