Formerly:
Santo Tomé De Guayana

Ciudad Guayana, city and industrial port complex, northeastern Bolívar estado (state), Venezuela, at the confluence of the Caroní and Orinoco rivers in the Guiana Highlands. Taking its name from the Guiana (Guayana) region, the traditional designation of Bolívar state, it was founded by the state assembly in 1961, uniting Puerto Ordaz (the hub of the complex, 67 miles [108 km] east of Ciudad Bolívar), San Félix (a port on the Caroní), Matanzas (a steel centre), Caruachi, Castillito (the “iron zone,” which includes El Pao, Cerro Bolívar, San Isidro, Palúa, and Ciudad Piar), El Callao gold mines, and the Macagua and Guri dams and hydroelectric plants on the Caroní.

The area was first claimed for Spain by the explorer Diego de Ordaz (1532). The original settlement of Santo Tomé de Guayana was founded (1576) on the Chirica tableland, where the Republicans in the war for independence defeated Spanish Royalists at the Battle of San Félix (1817).

Ciudad Guayana was planned to accommodate separate residential, recreational, commercial, and industrial sectors, with facilities for expansion over an area with a 100-mile (160-km) radius. In addition, 550 acres (223 hectares) between the great falls of the Caroní and the Macagua Dam were designated a natural park. The complex is administered by the Corporación Venezolana de Guayana (CVG), an economic planning commission established in 1960.

Tower Bridge over the Thames River in London, England. Opened in 1894. Remains an Important Traffic Route with 40,000 Crossings Every Day.
Britannica Quiz
Guess the City by Its River Quiz

The Angostura Bridge (completed 1967) across the Orinoco at Ciudad Bolívar (67 miles west of Ciudad Guayana) is an important link between the Guiana region and the rest of the country. Ciudad Guayana also has forestry, diamond mining, refractory brick, and paper and pulp enterprises and has attracted numerous small industries. Pop. (2001) 619,784; (2011) 672,651.

This article was most recently revised and updated by Amy McKenna.

Cerro Bolívar, hill of iron ore in north-central Bolívar estado (state), southeastern Venezuela. Discovered in 1947, the hill is 3/4 mi (1.2 km) wide, 4 mi long and rises 1,650 ft (500 m) above the surrounding grasslands in the Guiana Highlands. With San Isidro, to the south, it was one of the most important mineral finds in the 20th century. Cerro Bolívar is thought to contain more than 250,000,000 tons of high-grade ore, a mixture of hematite, limonite, and a small percentage of magnetite, with an average of more than 50 percent iron. The ore is mined year-round by open-cut methods and sent by rail to Puerto Ordaz 90 mi (120 km) to the northeast at the confluence of the Caroní and the Orinoco, for loading into oceangoing vessels. Millions of tons are shipped annually to the United States, Europe, and Japan. Some ore is used domestically at Ciudad Guayana. Ciudad Piar was established to house the employees of the mine.

This article was most recently revised and updated by Amy McKenna.