This collegiate is mainly Romanesque, dating back to the 11th and 12C. Chapels were added in the 15C and the interior was restored by Viollet-le-Duc. Here you will see fonts that baptised the child of the state, Louis de Poissy, better known as Saint..

A villa on piles with large glass surfaces and a solarium on top. You can go upstairs on a gentle ramp, and the spiral staircase was called a «pure vertical organ» by Le Corbusier!

The Toy Museum contains toys from before the invasion of TV product lines - porcelain, biscuit and celluloid dolls, teddy bears, lead soldiers and electric trains from the 1930s. A trip down memory lane for all big kids.

The Museum of Art and History contains many seals (some dating back to the 12C), Merovingian sarcophaguses, a painting by Meissonier of bathing in the Seine and a statue in polychrome wood from the Collegiate.

This 10 hectare English park was mentioned in the Middle Ages by Christine de Pisan in her Dict de Poissy, written in 1400. It descends towards the Seine and contains a long lake. The park is now named after landscape painter Charles Meissonier (1848..

The Peugeot-Talbot factory in Poissy changed the face of the landscape in the Seine Valley. With its robot production line, the factory produces more than 1,200 vehicles a day.

A collection of 70 cars that have left their mark on the history of the site are on show here, in particular Talbots.