The world's first treehouse · 1 wins, 4 go · June 7–9, Japan
Find three friends.
Stay at the world's first treehouse — on us.
Enter with friends — better odds together. You win, everyone goes.
Three days. Two nights. One winner and three friends.
A treehouse in the cedar forests of Bōsō Peninsula, Japan — private car door-to-door from Tokyo.
June 9 evening: TW×JP Claude Community Meetup. June 10: Code with Claude Tokyo.
(Community events are optional.)
Some things can't be built in a city.
Some friends make anywhere worth going.
Private car picks you up in Tokyo.
Settle into the treehouse among the cedars.
Forest dinner under the canopy.
Meet the residents — they have four legs.
Stars above. Code ahead.
Morning — code in silence among the trees.
Afternoon — forest walks, forest sauna, rotenburo, cats on your lap.
Evening — share what you're building.
No slides. Just conversation.
Breakfast with new friends.
A photo under the trees.
Private car back to Tokyo.
Evening — TW×JP Claude Community Meetup.
一樹屋
The world's first CLT treehouse — built around five living cedar trees.
Rotenburo under the forest canopy. A skylight framing the stars.
Sixteen rescue cats who wander freely through the doors.






































They were all rescued. Now they welcome guests.
Invite friends to enter — each one = +100 tickets for you.
3 friends = +300. 10 friends = +1,000.
Have GitHub? Stars count too: 1 star ⭐ = 1 ticket 🎟️
1 winner + 3 friends. Open to everyone.
More friends, better odds.
1 winner + 3 friends · Entries close May 31 · Winner announced June 4
Open to everyone — just enter your email.
Invite friends to enter — each one = +100 bonus tickets. More friends, better odds.
3 days, private transfer, and meals — fully covered.
Didn't win? Join us anyway:
June 9 evening — TW×JP Claude Community Meetup(community event)
June 10 — Livestream + after-party by TW×JP Claude Community(no invite needed)
Don't want to wait for the draw?
Book the treehouse directly — no lottery needed.
From ~$1,100 USD/person (3 days, 2 nights, all-inclusive).
See the full experience at treeavel.jp, then book via LINE or email.