Last but certainly not least, Copan. This was once an important center of the Mayan civilization. This massive metropolis is found near the border of Guatemala.
It was occupied for over 2,000 years. This UNESCO World Heritage Site was reportedly once the home of as many as 20,000 people at its peak sometime during the 700s. Must-see sites here include the Great Plaza of the Stelae, the Acropolis, and the fascinating Hieroglyphic Stairway.