Eager to bolster tourism, Hidalgo State came up with a novel idea: an advertising campaign featuring a well-known actress wearing Hidalgo’s most eye-popping sites on her flesh.

“Hidalgo, under my skin” was the catch phrase for the ads, which featured the soap opera actress Irán Castillo covered with computer-generated images of mountains, waterfalls and monuments.

But federal officials were unimpressed. They did not object to Ms. Castillo’s lying seminude on the grass with hot-air balloons displayed on her body or lounging in a forest with images of rock faces on her flank or even sprawled on a beautiful mosaic wearing nothing but a beautiful mosaic. “We’re not moralistic,” insisted Benito Taibo, an executive with Mexico’s National Institute for Anthropology and History. “We don’t have an issue with her. She’s a pretty girl.”

But the institute did have an issue with Ms. Castillo’s wearing Mexico’s patrimony on her curvaceous form. Whether it was the stone Atlantes in Tula de Allende or the old aqueduct in Padre Tembleque or the former convent in San Nicolás Tolentino, imprinting one of Mexico’s treasures on a soap opera star was deemed a violation of the law.