Mjölk Architekti 

The blackened facades are punctured by new windows, including a large glazed opening that replaced several smaller windows and provides a view over the landscape.

Circular windows on each of the gable ends add a quirky detail that the architects suggested makes the building “look like an overgrown birdhouse”.

https://www.dezeen.com/2021/02/20/mjolk-architekti-czech-cottage-burnt-wood-cladding/