Neon lights are vibrant, glowing signs made from glass tubes filled with neon gas that emit bright, colorful light when electrified. First popularized in the early 20th century, they are known for their striking colors and iconic use in advertising, especially in cities like Las Vegas and New York. Neon lights come in a range of hues, from vivid pinks and blues to classic reds and oranges, adding a retro, artistic feel to any space. They are often used for signs, artwork, or home decor, providing a unique and eye-catching glow that stands out in any setting.