Le Vésinet Hospital (72, avenue de la Princesse), built by Laval in 1859 as a refuge for convalescent female workers.
The Sainte-Marguerite Church (place de l'Eglise), built in 1862 by Boileau.
The Berthe Villa (72 route de Montesson) built by Hector Guimard in 1896.
The Pink Palace (12 rue Diderot) 1899.

While the "Wood-Cottage " (122 boulevard des États-Unis), built up by Tricotel in 1864, was classified "historical monument"- the only one in Le Vésinet – in 1999.

This set of protective measures has allowed Le Vésinet to stay the sole example of park-city in France.

Since 1997, Le Vésinet holds the supreme distinction of the "Quatre Fleurs" (Four Flowers) at the national flowery cities and villages contest.