Japanese architecture firm ARTechnic has designed and completed this unusual- but beautiful and minimalist- concrete ovoid home in Karuizawa, Japan. Built in two sections, around a fir tree, it is nestled in a forest and is as amazing inside as it is on the outside.
You can see how the two ovals are constructed around the fir tree:
And now, the interior, complete with curved banquets, wood built-ins and round skylights:
above photos provided by Nacasa & Partners Inc
If you wish to learn more, Rose Etherington has gone into great detail about the home on Dezeen, including floorplans, how the initial plans changed over time and building details here.