1 / 4   International Museum Day is held every year on or around May 18 to raise awareness of the fact that, “museums are an important means of cultural exchange, enrichment of cultures and development of mutual understanding, cooperation and peace among peoples.” But it is also an avenue for people to show off all kinds of collections. Here, Tasmin Humphries, 24, stands with her huge assortment of Superman memorabilia. /VCG Photo

2 / 4   Colorite, 41, poses with a picture that shows a section of his Barbie collection in Hudson, Florida. He has more than 2,000 dolls housed in four bedrooms of his home, valued at about 80,000 US dollars and accumulated over 16 years. /VCG Photo

3 / 4   Dad-of-four Gary Kaye, 53, has amassed 8,000 empty crisp bags for a packet that he can sell and give the money to charity. He developed the hobby to help him deal with the cancer diagnosis and eventual death of partner of over 20 years. /VCG Photo

4 / 4   Jeff Lebo, 53, is a can collector who has turned a vacation home into a beer can paradise. He stands with his collection at Brewhouse Mountain in York Haven, Pennsylvania. He has amassed more than 87,000 beer cans over 40 years. /VCG Photo