Roatan is the largest of the eight islands known collectively as Las Islas de la Bahia. Brilliant clear blue waters and palm fringed beaches are cooled by gentle trade winds. An extensive reef system offers the most spectacular diving and snorkeling in the Western hemisphere, while inland nature reserves give an up-close look at native wildlife, including monkeys, sloths, and parrots.

Nestled in the foothills of the Black Forest, Baden-Baden is Germany's ultimate spa destination, famous for its luxurious thermal baths and charming Belle Époque architecture. This elegant town, whose name literally translates to "Baths of Baden," has attracted visitors seeking relaxation and rejuvenation for centuries.

Puerto Madryn is a seaside city on the eastern coast of Argentina. Facing Golfo Nuevo and the South Atlantic Ocean, this coastal destination is popular for its beaches, marine life, nature preserves, and Patagonian museums.

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.

Copper River, Alaska's fourth largest river travels from the dry interior climate to the temperate rainforest along Prince William Sound.