A freak show is an exhibition of biological rarities, referred to in popular culture as "freaks of nature". Typical features would be physically unusual humans, such as those uncommonly large or small, those with intersex variations, those with extraordinary diseases and conditions, and others with performances expected to be shocking to viewers. Heavily tattooed or pierced people have sometimes been seen in freak shows (more common in modern times as a sideshow act), as have attention-getting physical performers such as fire-eating and sword-swallowing acts. Since at least the medieval period, deformed people have often been treated as objects of interest and entertainment, and crowds have flocked to see them exhibited. A famous early modern example was the exhibition at the court of King Charles I of Lazarus and Joannes Baptista Colloredo, two conjoined brothers born in Genoa, Italy. While Lazarus appeared to be otherwise ordinary, the underdeveloped body of his brother dangled from his chest. When Lazarus was not exhibiting himself, he covered his brother with his cloak to avoid unnecessary attention. As well as exhibitions, freak shows were popular in the taverns and fairgrounds where the freaks were often combined with talent displays. For example, in the 18th century, Matthias Buchinger, born without arms or lower legs, entertained crowds with astonishing displays of magic and musical ability, both in England and later, Ireland. It was in the 19th century, both in the United States and Europe, where freak shows finally reached maturity as successful commercially run enterprises. During the late 19th century and the early 20th century freak shows were at their height of popularity; the period 1840s through to the 1940s saw the organized for-profit exhibition of people with physical, mental or behavioral rarities. Although not all abnormalities were real, some being alleged, the exploitation for profit was seen as an accepted part of American culture.