Supposedly located on the equator (with modern measurements it is actually a few hundred yards away), this complex makes for a fun outing. In 1736, the Frenchman Charles-Marie de La Condamine came here to measure the length of a degree of latitude which contributed to the birth of the metric system. In addition to a yellow line drawn on the pavement to indicate the equator, there is a large monument, museums, a tourist train, a mini-zoo, restaurants and lots of schlock shops.
The monument contains a very good ethnographic museum and a viewing platform high above the ground. We spent about three hours there enjoying the ambiance of the place and having a very nice, relaxed lunch.