He is best known for his richly textured paintings in an intricate, highly colored style that is not easy even though everything is readily intelligible: male and females characters, beasts, forests, architectural structures and artifacts.

[6] His parents were patrons of the arts and often had artists vacation at their summer home, the 15th-century family estate Mas Parés located in the village of Sant Martí Sapresa.

He traveled throughout Europe, stopping in Rome to visit his friend the painter Jaume Muxart, and finally ended up in Copenhagen, selling his recently painted watercolors in the squares of major cities along the way to pay his expenses.

In 1958, Vilallonga signed an exclusive contract with Max Stern, owner of the prestigious Dominion Gallery in Montréal, who was responsible for introducing the contemporary European artists Henry Moore, Marino Marini, Van Dongen and Picabia in Canada.

[12] Jesús Carles de Vilallonga’s paintings, sculptures, prints, and drawings are the subject of numerous books and documentaries and are in museums, universities, and private collections throughout the world.

Retrospectives of his work were held at the Thousand Oaks Civic Arts Plaza in California in 2000,[14] the Parisian Laundry in Montréal in 2006,[15] and the Museu Casa de la Paraula in Spain in 2015.

All of the documentation on Vilallonga's long and prolific career – exhibition catalogs, brochures, press reviews, magazine articles, publications, and over 3,000 photographs of his work – are available for consultation at the Arxiu in Santa Coloma de Farners.