A look at some of the world's most unusual laws and their stated reasons

Singapore has banned the sale and chewing of gum since 1992, with violators facing fines and imprisonment. In Venice, Italian authorities introduced a rule in 2008 prohibiting the feeding of pigeons in public areas, carrying penalties of 25 to 500 euros. Greece banned high-heeled shoes at the Acropolis in 2009 to prevent damage to historic ruins. Denmark outlawed masks, helmets, scarves, hats and fake beards in public spaces in August 2018, saying the measure was intended to make identification easier. Rome requires dogs to be walked daily, with violators fined at least $625, and ornamental fish such as goldfish cannot be kept in small bowls. In the U.S. state of Idaho, cannibalism is punishable by up to 14 years in prison, while the Spanish town of Ashbeylie has barred dominoes in public areas on noise pollution grounds. Trinidad and Tobago prohibits hanging laundry on balconies, and Switzerland bars leaving social animals such as guinea pigs alone. Hong Kong expanded its ban on feeding wild animals, including pigeons, from Aug. 1, 2024, carrying a fixed fine of HK$5,000. Denmark, New Zealand and France also restrict the names parents can officially give their children.