I don't know what it is, but photographs of balloons rarely fail to make me feel happy. Maybe it's their bright colors or their weightlessness, but even putting together this collection put a big smile on my face.
Sources (from top to bottom): Flickr: Please Sir, Jen Zahigian, Alice B. Gardens, Abby Powell, Cig Harvey, Jane Heller, Youngna Park, Amy Nieto, Feaverish Photography, and Max Wanger.
