In 1890, Van Zuylen inherited the ruined De Haar Castle and set about restoring it. Financed by Rothschild money and directed by Dutch architect Pierre Cuypers, work started in 1892 and took 20 years.[5]
With Jules-Albert de Dion and Paul Meyan, Van Zuylen was a founding member of the Automobile Club de France, and served as the organisation's first president between 1895 and 1922. He was also the first president of the Association Internationale des Automobile Clubs Reconnus (AIACR, English: 'International Association of Recognized Automobile Clubs'), later known as the Fédération Internationale de l'Automobile (FIA), holding the position from 1904 until his retirement in 1931.
Equestrian
In June 1900, Van Zuylen took part in the four-in-hand mail coach event during the International Horse Show in Paris. He entered two teams, the second driven by Olivier, Count de La Mazelière. The event was part of the Exposition Universelle, and later classified as part of the 1900 Summer Olympics.[9]