When I lived in up north I loved the old cast iron radiators. Preferred hot water over steam ones. Only bad thing was most of the older ones were insulated with fairly thick asbestos. One home I lived in for a while was originally built with a wood log burning furnace in the basement. Large air gravity flow pipes feeding all the rooms above.

Found this brief history on home heating:

https://shiptons.ca/shiptons-blog/a-brief-history-of-home-heating/21

Surprised Korea has really good heat method 2000 years ago.