Great Guild, in 1334 and became Blackheads property in 1713. Blackheads was a organisation of unmarried foreign merchants, the building was destroyed in WWII and was rebuilt for Riga's 800 anniversary in 2001. House of the Blackheads Guild (fr. maison des Têtes Noires à Rīga - de. Schwarzhäupterhaus), Riga, Latvia.