Stamp collecting is the hobby of gathering and organizing postage stamps from around the world. Collectors often seek stamps that are unique, rare, or have historical significance. This activity can involve sorting stamps by country, theme, or time period, and many collectors enjoy learning about the stories behind each stamp. The practice of stamp collecting, also known as philately, began in the mid-19th century when the first adhesive postage stamp, the Penny Black, was issued in Great Britain. Today, collectors may join clubs, attend exhibitions, and trade stamps with others to enhance their collections and share their passion for this fascinating hobby.