Mexico's historic Chapultepec Castle has been seen flying the black Targaryen flag, causing officials to threaten legal action against HBO for using the site in an ad campaign for the 'House of the Dragon' prequel to 'Game of Thrones.'
Key Points
Chapultepec Castle in Mexico seen flying the black Targaryen flag
Mexican officials upset over use of historical site in HBO ad campaign
Threat of legal action by National Institute of Anthropology and History (INAH)