Wertheim is an enchanting town on the banks of the Main River in Germany. A favorite stop on European river cruises, highlights of this charming destination include the Wertheim Castle and the town center, where you can wind your way down cobblestone streets replete with 16th century architecture. Venture outside of town and follow the Tauber River to Kloster Bronnbach, an immense and ornate monastery dating back to the 12th century.

Puerto Limon is a busy port city and capital of the Limon province. This Caribbean locale is blanketed with rainforest habitats and full of tropical beauty.

Agrigento, located on the southern coast of Sicily, is a city steeped in history and renowned for its ancient Greek ruins. The crown jewel of Agrigento is the Valley of the Temples, a UNESCO World Heritage Site and one of the most spectacular archaeological sites in the Mediterranean. Visitors can marvel at the remarkably preserved Temple of Concordia, which dates back to the 5th century BC and is considered one of the best-preserved Greek temples in the world.

Bandar Seri Begawan, the capital of Brunei, sits along the Brunei River and combines traditional charm with modern infrastructure. The city is known for its stunning Islamic architecture, including the Sultan Omar Ali Saifuddien Mosque, with its golden dome and marble minarets reflecting in the surrounding water.

The commercial and cultural center for the Ruhr region on the Rhine River, Duseldorff is also the site of the Felderhof Cave where Neanderthal man was found in 1856.