This might almost make winter in Minnesota tolerable. We’re talking about the five-meter-tall golden egg that’ll soon be cracked open to reveal a sauna. Solar Egg, a project of Swedish artists Bigert & Bergström, known internationally for the ways their work addresses climate change, will be on hand at the “Eggstravaganza” opening reception to answer questions about the egg’s making, meaning, and message. Constructed of wood and covered with a mirrored surface, the egg reflects its surroundings, while the heart-shaped sauna inside invites participation. Book the sauna (Wednesday evenings and weekends) and join the conversation.