Readers are swooning over a "treeless treehouse" named Penfold, which architecture studio De Matos Ryan created for a London garden.
Accessible only by crawling beneath it, Danger Mouse is a 4.1-metre-high structure featuring triangular windows that frame views of its surroundings.
One commenter said: "I could live in this playhouse!"
Other stories in this week's newsletter include David Chipperfield Architects' transformation of a 20th-century office block in Paris, Heatherwick Studio's sculpture containing 350 trees and an apartment block in Veracruz, Mexico.
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