El Jem is a town in central Tunisia best known for its exceptionally preserved Roman amphitheatre, which dominates the surrounding plain. The monument was built as a free-standing structure of stone blocks and could accommodate an estimated 35,000 spectators, making it one of the largest amphitheatres in the Roman world. El Jem developed in an important agricultural region associated with olive cultivation and the production and trade of olive oil.

Tucked between Jordan's sandstone cliffs in the southwestern desert, Petra was carved directly into rose-colored rock more than 2,000 years ago. Visitors approaching through the narrow gorge known as the Siq are rewarded with their first glimpse of Al-Khazneh, the Treasury, a towering facade that seems to appear from another world.

Katmai National Park and Preserve lies along Alaska’s remote Pacific coast, shaped by volcanism, glaciers, and deep time. The area gained prominence after the 1912 Novarupta eruption, one of the largest volcanic events of the 20th century, which transformed the landscape and led to the creation of the Valley of Ten Thousand Smokes.

Palm Desert is a city in California’s Coachella Valley, set between the San Jacinto and Santa Rosa Mountains and the Little San Bernardino Mountains. Its landscape is characterized by desert plains, palm trees, rugged mountain slopes, and irrigated areas created around residential neighborhoods and golf courses. El Paseo forms the city’s best-known commercial district, with shops, galleries, restaurants, and public art along a landscaped boulevard.

Saint-Gilles-les-Bains is a coastal town on the western side of Réunion, a French island in the southwestern Indian Ocean.