Books & logbooks made with care

Made with care.
Built for curious families.

Books and logbooks designed to help children notice the world, ask big questions, and remember every journey.

Discover Logbooks Discover Children's Books — The Why Club
What we make

Two brands, one home. Both made for families who love to explore.

Every journey
deserves to be
remembered.

Travel logbooks designed for kids of all ages, covering every kind of adventure — flights, cruises, road trips and train journeys. Created by a former cabin crew who spent twelve years in the skies with Air Nostrum, Emirates and in private VIP aviation, and now travels the world with her two children by air, sea, road and train. Adventuring was born from a passion she carried long before motherhood and passed on to her children since birth.

Shop Logbooks  —  ✈️ Flight  ·  🚢 Cruise  ·  🚗 Road Trip
✈️  Flight
My Flight Logbook — Zebra My Flight Logbook — Elephant My Flight Logbook — Bear My Flight Logbook — Lion
🚢  Cruise
My Cruise Logbook — Dog My Cruise Logbook — Monkey My Cruise Logbook — Penguin My Cruise Logbook — Cat
🚗  Road Trip
My Road Trip Logbook — Rabbit My Road Trip Logbook — Fox My Road Trip Logbook — Raccoon My Road Trip Logbook — Cow

🚂  Train Logbook  ·  🎿  Ski Trip Logbook
coming soon

Coming End of 2026

The Why
Club

A picture book series for children aged 3 to 6, built around one simple question: why? Millie and Alphie are joined by gentle animal guides who help them explore the big questions children ask every day — about dreams, thunderstorms, friendship, and everything in between.

"We are the Why Club. Ask a why and we'll try."

Notify me at launch
Big questions.
Gentle answers.
Curious hearts.

A series of picture books that turns bedtime questions into little adventures of discovery.

Publishing end of 2026

Be the first to know.

Sign up to receive updates on new logbook launches, The Why Club publishing news, in-person reading events, and everything new from Casa Arenas.

Twelve years in the skies. A lifetime of curiosity. Two children who never stop asking why.

Rocío Dos Santos Arenas

Rocío Dos Santos Arenas

I spent twelve years as cabin crew — with Air Nostrum, Emirates, and in private VIP aviation — traveling the world with a notebook and a curiosity I could never quite switch off. Every destination, every flight, every journey left something worth remembering. I wanted to hold onto all of it.

Adventuring was not something I invented after becoming a mother. It was a passion I carried long before my children arrived, and one I placed in their hands from the very beginning. Both of them have had their own logbooks since birth. The books were always theirs too.

The Why Club came from a bedtime question that did not have a simple answer — the kind children ask when the lights go out and the world suddenly feels very large. I wanted a book that took those questions seriously and answered them with warmth.

Casa Arenas is based in Switzerland, registered in Ticino. Everything we make is designed for families who pay attention to the world they move through and who want their children to do the same.