Situated on the coast of Tuscany near the Tyrrhenian Sea, Livorno, Italy, is a popular stop on Mediterranean cruises and an important commercial and industrial port. It was founded on a former auxiliary Pisan port between the late 16th and early 17th centuries on the orders of the Grand Duke Cosimo I, who made it Tuscany's main outlet to the sea.

Lugano, tucked into Switzerland’s Italian-speaking Ticino region, blends Mediterranean flair with Alpine elegance. The city sits on the northern shore of Lake Lugano, its pastel-colored villas and palm-lined promenades framed by surrounding mountains such as Monte Brè and Monte San Salvatore.

Nha Trang, located on Vietnam's southern coastline, is a vibrant city renowned for its stunning beaches and dynamic culture. This coastal paradise boasts a 6-kilometer stretch of golden sand along Nha Trang Beach, where turquoise waters meet palm-fringed shores, perfect for sunbathing and swimming.

Key Largo, the northernmost of the Florida Keys, is renowned for its pristine natural beauty and vibrant marine life. As part of the Florida Keys archipelago, Key Largo is a gateway to the spectacular underwater world of the John Pennekamp Coral Reef State Park, the first underwater park in the U.S. Here, visitors can explore vibrant coral reefs through snorkeling and scuba diving, or take a glass-bottom boat tour to marvel at the colorful marine ecosystems without getting wet.

Bulgaria is a republic in southeastern Europe. The capital and largest city is Sofiya. Bulgarian culture has been influenced successively by Byzantine, Greek, Russian, and Western cultures.