Detailed answer

The Las Vegas Sign is constructed from steel and features a porcelain enamel finish, which provides a durable and long-lasting surface. The sign's framework is made up of steel beams and supports, while the exterior features a porcelain enamel coating that is resistant to fading and cracking. The sign's materials have been carefully selected to withstand the harsh desert climate and ensure the sign remains a vibrant and iconic landmark for years to come.