Last Saturday @kbosspotter alerted me that an An-124 was due at KPSM (Portsmouth, NH) later that day (thank you for that!). My youngest daughter and I drove there and were able to witness this huge aircraft arrive.
The specific aircraft in question is an An-124-100 Ruslan (UR-82029, c/n 19530502630) operated by Antonov Airlines, a subsidiary of the Antonov Design Bureau. It flew to NH from France, and later in the afternoon continued on to NC.
Here are some pictures.
I have never seen one of these fly before, although I have photographed them before (including the bigger An-225 Mriya). Photos below.