Unlike most other prehispanic towns, Uxmal is not laid out geometrically. The earliest reports on the state of conservation and on cleaning and protection work at Uxmal were produced in 1913 and 1914. Systematic archaeological work began in 1940, carried out by US archaeologists, and has continued since that time, carried out by Mexican specialists in association with conservation and restoration activities. This applies in the case of the Hacienda Uxmal, where part of the archaeological zone is located. However, the authorities now consider it a matter of priority to establish a management plan for Uxmal and the Ruta Puuc.