Is there a chimney in Terraria?

Like the Fireplace, the Chimney is an ornamental structure. It has no in-game purpose other than being a pretty face.

Silky Terrier Dog Breed Playing Aro... Silky Terrier Dog Breed Playing Around

Do fireplaces stack in Terraria?

If more than one is placed at a time, the Campfire and Heart Lanterns do not stack.

How do you make boreal wood?

The Snow Biome substitute for normal wood is Boreal Wood. In general, it has the same properties as regular wood, but it can be used to make a unique set of furniture. It’s made by chopping down trees in the Snow Biome to get it.