The Icelandic Phallological Museum, located in Reykjavík, Iceland, is home to the world's largest collection of penises and penile parts. Founded in 1997 by Sigurður Hjartarson and now run by his son Hjörtur Gísli Sigurðsson, the museum boasts over 300 penises from more than 100 mammal species, including mythical creatures like elves and trolls. Visitors can marvel at specimens ranging from a massive blue whale penis to a tiny hamster baculum. The museum's quirky exhibits, which also include phallic art and crafts, have made it a popular tourist destination, attracting around 70,000 visitors annually.