Stack Journey

Do you like traveling? Are you bored these days when you stay at home? Now go on a trip around the world!
Build Stacks in Different Cities! And save Miles!
Collected miles can be exchanged for unique souvenirs of the city.
Don't miss it because you can also see the great night view!
So are you ready? Let's go!

May we all go on a true journey at the end of this journey!