To visit Barcelona is to embrace both the past and the future. There is much to do and see in this cosmopolitan capital of Catalonia, from medieval structures to beaches to UNESCO Heritage Sites by Antoni Gaudí and Lluís Doménech i Montaner.

Hot Springs, Arkansas has been drawing visitors for centuries, and it all starts with the water. The city sits atop a natural thermal spring system that produces nearly a million gallons of 143-degree water each day. These springs gave rise to Bathhouse Row, a stretch of eight historic bathhouses within Hot Springs National Park. Some, like the Fordyce Bathhouse, now serve as museums, while others still offer traditional thermal soaks.

Travel to Johannesburg, the cosmopolitan city at the heart of South Africa, and find some of the country’s most iconic landmarks. Replete with cultural excursions, historical sites, and superb restaurants, Johannesburg has plenty to explore.

The Great Barrier Reef stretches along Australia’s northeast coast, forming the largest coral reef system on Earth and one of the planet’s most complex living ecosystems.

Bath is a city full of history and culture. Romans trekked many miles to bathe in the hot, soothing mineral waters of the Roman Bath. Majestic art collections were contributed to Bath from many different civilizations. The fan-vaulting at Bath Abbey has 614 memorial tablets that creates an extensive mural cenotaph to the people that contributed to the grandeur of Bath.