Amoako Boafo is in a buoyant mood. The 40-year-old Ghanian painter is about to open his first London show, “I Do Not Come to You by Chance,” at a UK outpost of the American mega-gallery, Gagosian.

HOUSTON, Texas -- Thalie Waters is no stranger to the Houston Art Car Parade. Her family is known for their impressive art car entries of the past, including The Phoenix and Hippysaurus. Now, Thalie ...