From bare soil to full canopy, this is how you build a forest — one tree, one layer, one season at a time.

Scandinavia remains a leader in the field. Norway’s Mjøstårnet, built in 2019, is among the tallest timber buildings in the world. Finland’s capital, Helsinki, has a district made entirely of wooden ...

Lively trees made from pipes spiraling around central cores serve a triple purpose as climbable structures, shade-providing canopies, and supports for a series of interconnected bridges throughout the ...