Triangle of the Sun
Almost all of Guerrero’s tourism is concentrated among the municipalities of Acapulco, Zihuatanejo and Taxco, which the state promotes as the “Triángulo del Sol” (Triangle of the Sun). Acapulco is by far the most important of the three. In 2008, the state attracted 272.8 million dollars of private investment into the tourism sector of the economy, with most of it invested in Acapulco and Zihuatanejo/Ixtapa. In addition, federal tourism agencies invested another 180 million pesos that year, both for infrastructure and promotion. The State Department of the United States has issued travel advisories for the state, especially Acapulco, due to drug trafficking, but safety concerns have been dismissed by local authorities.
Acapulco is one of Mexico’s oldest and most well-known beach resorts, which came into prominence by the 1950s as a getaway for Hollywood stars and millionaires. Acapulco is still famous for its nightlife and still attracts many vacationers, although most are now from Mexico itself. Zihuatanejo is the fourth-largest city in the Mexican state of Guerrero. It is northwest of Acapulco. This town has been developed as a tourist attraction, paired along with the modern tourist resort of Ixtapa, 5 km away. However, Zihuatanejo keeps its traditional town feel. Taxco was one of the primary mining areas during the colonial period. It has narrow winding streets with no sidewalks, due to being built in a narrow ridge on the side of a mountain. The town was declared a national monument by Mexico in 1990, with numerous historical buildings dating from the 17th to 19th centuries.
Most of Guerrero's pre-Hispanic history is known through archeology. The state has 1,705 registered archeological sites, with seven officially open to the public. These include La Organera-Xochipala, Palma Sola, Teopantecuanitlán and Cuetlajuchitlán. La Organera-Xochipala is the best known of Guerrero’s archeological sites because of its monumental architecture. The site has seven states of development with six patios, and thirty two structures. The site covers 1600 m2 and is located in the community of Xochilapa in the municipality of Eduardo Neri or Zumpango del Río, which is a mountains and semi-arid region of the state. It was occupied from 650 CE to 1000 CE The tombs are the most notable constructions here and feature a number of Mayan "false arches".
Palma Sola is a site on the south side of El Veladero in Acapulco. This site does not have any structure but rather it is important for 18 rocks with petrogylphs with images of humans, plants and animals. There are also figures which look to be calendar like and geographic in function.
Teopantecuanitlan is the most important Olmec era site in Guerrero. Its calculated to extend over 160 ha but the most important buildings cover 50000 m2. It was discovered in 1983 as it was being sacked. It is estimated to have been inhabited from between 1000 and 500 BCE. It is located in the Valley of Copalillo where the Amacuzas and Mezcala (Balsas) Rivers converge. Cuetlajuchitlan was discovered accidentally during the construction of the Cuernavaca, Acapulco highway. To preserve the site, the Los Querendes Tunnel was built underneath it. It is calculated to extend 35 ha but only 2 ha have been explored. It was principally occupied between 200 BCE and 200 CE. It is identified as being with the Mezcala culture. The site stands out as an early example of a planned city which extends from the intersection two main roads.
Other, smaller sites include Ixcateopan, Los Tepoltzis and Huamuxtitlan. Pueblo Viejo is located on the side of the El Tamarindo mountain just west of the city of Iguala. This site has an extension of 901145 m2 and is divided in two parts due to a ravine that runs through it. The exact number of structures here is not known because the site has not been fully explored. The site of Ixcateopan is located in the municipality of the same name. The explored site was a civic-religious center with a palace and an altar to Quetzalcoatl. Los Tepoltzis is located outside the community of Tixtla and consists of a number of small sites including a ceremonial center thirty meters long, three meters high with stairways and a plaza. Huamuxtitlán is in the municipality of the same name. While the site is covers significant territory only one pyramid has been uncovered. Most of the rest of the site consists of living quarters. Near this site are smaller sites along the Tlapaneco River.
Another archeological site is "La Soledad de Maciel" also known as "La Chole", only 20 min from Ixtapa-Zihuatanejo. Presently it's being restore by the "History and Antropology National Institute (INHA)" and has a museum with all the pieces found in the area so far. Worthwhile to visit.
The state has a number of sites suitable for ecotourism, including mountains, caves, wild areas for the observation of flora and fauna, camping and areas that offer extreme sports. Many of the extreme sports are offered in the Acapulco area including high-speed water jets, kayaking, canoeing, river rafting, rock climbing, spelunking, paintball, mountain climbing, parasailing and more. Activities in other parts of the state include rafting on the Papagayo River, kayaking and canoeing in Ixtapa and Zihuatanejo, rock-climbing in Chilpancingo and Taxco, mountain climbing in Ixcateopan, rappelling in Zihuatanejo and bungee jumping and parasailing in Iguala.
There are a number of caves to explore such as Grutas Dos Arroyos in Dos Arroyos, various small caves in Pueblo Bravo and some in Acapulco. The best known caves in the state are in the Grutas de Cacahuamilpa National Park. This park is home to the Grutas de Cacahuamilpa Caverns and Grutas de Carlos Pacheco. The first is a live cave with many rock formations still in progress. This has infrastructure for tourists and guided tours. The second set of caves is a dry cave with less infrastructure.
As of 2014, Guerrero is ranked as the most dangerous state in Mexico.