Chan Chan, located on the north coast of Peru near Trujillo, was the largest adobe city in the Americas before Columbus' arrival, built by the Chimu culture in 850 AD. The 12,000 square kilometer city consisted of nine citadels, serving as administrative buildings, sacred temples, reservoirs, and storehouses, and was home to 100,000 people before the Incas' conquest in the fifteenth century. UNESCO has designated it a World Heritage Site. Culture Trip, the article's publisher, shares its vision for the future of travel, focusing on meaningful connections and responsible exploration through curated premium small-group trips, which are deeply immersive, planet-friendly, and fully carbon offset.