Where, in London, will you find the painting of the "Laughing Cavalier"?

The "Laughing Cavalier" (1624) is a portrait by the Dutch Golden Age painter Frans Hals in the Wallace Collection in London, which has been described as "one of the most brilliant of all Baroque portraits". The title is an invention of the Victorian public and press, dating from its exhibition in the opening display at the Bethnal Green Museum in 1872–75, just after its arrival in England, after which it was regularly reproduced as a print, and became among of the best known old master paintings in Britain. The unknown subject is in fact not laughing but can be said to have an enigmatic smile, much amplified by his upturned moustache.

The Wallace Collection is an art collection in London open to the public, housed at Hertford House in Manchester Square, the former townhouse of the Seymour family, Marquesses of Hertford. It comprises an extensive collection of fine and decorative arts from the 15th to the 19th centuries with important holdings of French 18th-century paintings, furniture, arms and armour, porcelain and Old Master paintings arranged into 30 galleries.