An obelisk is a tall, four-sided monument that tapers to a point at the top. These structures are often made of stone and are typically found in public spaces, such as parks or squares. The most famous obelisk is the one in Central Park, New York City, which was originally built in Egypt around 1450 BC. Obelisks were often erected to honor gods or commemorate significant events. Historically, obelisks were associated with the ancient Egyptians, who believed they symbolized the sun's rays. They were often placed in pairs at the entrances of temples. Today, many obelisks can be found around the world, serving as reminders of ancient cultures and their architectural achievements.