A charming city nestled on the banks of the Rhine, Mainz, Germany lies southwest of Frankfurt and is replete with historic buildings and famous museums. The city's Altstadt district meets the river's edge and boasts a variety of beautiful and fascinating landmarks.

The continent lying mainly within the Antarctic Cirle with the South Pole approximately at its center. The Antarctic Treaty of 1959, signed by 12 countries prohibits military activities and promotes the exchange of scientific information.

El Calafate, a small town in southern Patagonia, serves as the main gateway to one of Argentina’s most spectacular natural wonders, the Los Glaciares National Park. Sitting on the shores of Lake Argentino, El Calafate was once a quiet outpost known mainly for sheep farming and the hardy calafate berry. Today, it attracts travelers from around the world who come to witness massive ice formations and the shifting blue walls of nearby glaciers.

This small yet charming city in Alaska's panhandle is a throwback to the gold rush era. Skagway is a well-preserved part of Klondike Gold Rush National Historical Park.

Whether exploring ancient ruins or strolling through its modern city center, visitors will find plenty to discover in Nijmegen, the oldest city in the Netherlands.