Complex sentence: Tikal Temple I is the designation given to one of the major structures at Tikal, one of the largest cities and archaeological sites of the pre-Columbian Maya civilization in Mesoamerica, located in the Petén Basin region of northern Guatemala.
Split into simpler sentences: Tikal Temple I is the designation given to one of the major structures at Tikal, one of the largest cities and archaeological sites of the pre-Columbian Maya civilization in Mesoamerica. It is located in the Petén Basin region of northern Guatemala.