Old postcards are printed cards that were used for sending messages through the mail before the rise of digital communication. They often feature images of famous landmarks, scenic views, or artistic designs, making them popular souvenirs for travelers. Postcards typically have a space on one side for a picture and a blank area on the other for writing a message and addressing the recipient. Collectors often seek out vintage postcards for their historical value and unique artwork. Some postcards date back to the late 19th century, showcasing the styles and cultural themes of their time. The practice of sending postcards became widespread with the introduction of the Penny Post in the UK, allowing people to communicate easily and affordably.