To the East:

* Caribbean Sea: This large sea forms the eastern border of Mesoamerica.

* Gulf of Mexico: The Gulf of Mexico lies to the east of Mesoamerica, bordering the Yucatan Peninsula.

To the West:

* Pacific Ocean: The Pacific Ocean forms the western boundary of Mesoamerica.

Within Mesoamerica:

* Lake Nicaragua: This is the largest lake in Central America, located in Nicaragua.

* Lake Atitlán: This beautiful lake is located in Guatemala, surrounded by volcanoes.

* Lake Izabal: This large lake is located in Guatemala, connected to the Caribbean Sea by a short river.

* Lake Chapala: This is the largest lake in Mexico, located in the state of Jalisco.

* Lake Texcoco: This lake, now mostly drained, was historically important to the Aztec civilization.

Mesoamerica also has a number of rivers, including the Usumacinta River, the Grijalva River, the Motagua River, and the San Juan River.