The Corning Museum of Glass in Corning, New York is a beautiful modern building with an impressive collection of antique and new glass. Throughout the day they offer demos and short lectures on many glass topics, and even science-challenged people like me can learn fascinating things. If you have the chance to go, I recommend it.
The first 2 photos show a glass ball by Susan Plum from Brooklyn, NY that stands about 36" tall. The pitcher below was made around 400-450 BC! I had no idea they were blowing glass that long ago.
The teacup and saucer below is from France, made around 1850. Wowzers.