Decline, Then the Spanish

Long before Spanish conquistadors arrived, Chichen Itza had faded as a regional power. The Maya stopped building its grand monuments and abandoned it as a political capital around the 13th century — for reasons still debated, including drought, internal conflict, shifting trade routes, or possibly all three at once.

The area was not empty, though. When the Spanish reached the ruins in the 1530s, they founded a short-lived town called Ciudad Real among the old buildings. The Maya soon besieged the garrison and, in 1534, forced the Spanish to abandon it. The Sacred Cenote also remained a place of pilgrimage well after contact.

The jungle swallowed the city for centuries. When archaeologists rediscovered it, they found a civilization that had mastered astronomy, acoustics, and architecture simultaneously. The Maya were not primitive — they were among the most scientifically advanced peoples of their era.