Kilauea is the world's largest active volcanic mass, located southeastern Hawaii Island. The central feature of Hawaii Volcanoes National Park is an elongated dome built of lava eruptions from a central crater and from lines of craters extending along east and southwest riffs or fissures.

Located 75 miles south of San Francisco, Santa Cruz is a vibrant and laidback city on the central coast of California. Settled by Spanish Missionaries in the late 18th century, Santa Cruz has become a coastal paradise for surfers, students, and lovers of nature. Nestled between Wilder Ranch State Park and Henry Cowell Redwoods State Park, University of California, Santa Cruz, is the city’s leading research institution.

Nestled among quiet mountains lies the thriving Twin City of Bristol. One community in two states, this beautiful city is Bristol, Virginia on the north side of State Street and Bristol, Tennessee on the south side.

Southwest of Hannover in western Germany, Bielefeld lies near the Teutoberg Forest, the site of the 9th century Battle of Teutoberg Forest.

Santa Marta, located on Colombia’s northern Caribbean coast, is one of the country’s oldest cities, founded in 1525. It has long served as a gateway between the coast and the Sierra Nevada de Santa Marta, the world’s highest coastal mountain range.