Art collections are groups of artworks gathered by individuals, institutions, or organizations. These collections can include various forms of art, such as paintings, sculptures, photographs, and decorative arts. Collectors often focus on specific themes, styles, or periods, such as Renaissance art or modern abstract pieces. Many art collections are displayed in museums or galleries, allowing the public to appreciate the works. Some notable collections belong to famous institutions like the Louvre or the Metropolitan Museum of Art. Collecting art can also serve as an investment, as the value of certain pieces may increase over time.