Aguas Calientes ("hot waters" in Spanish) is the name of a river in Carabobo state.
The springs were visited in 1800 by Alexander von Humboldt, who measured the temperature.
Humboldt published a scientific description of the springs on his return to Europe.
[1][2] The Puerto Cabello and Valencia railway was built in the 1880s following the course of the valley for a considerable part of its route.
The river flows into the Caribbean west of Puerto Cabello.