Android collections

[Kamikaze]

Hello,
i got a question about some collections you make.
When you complete the Mexico flight collection you get a Mexican restaurant. But when you complete the Amsterdam, Tokyo and Hawaii collection you get a golden tulip, samurai armor and a parasol; what can we do with these things ? Are they used for other collections ?

 

[Agent_L]

Most collections are like collecting stamps or butterflies - the collection is the goal itself.

 

[greensmith]

Some collections give reward buildings, others give nothing but coins and/or experience. Items like the Golden Tulip are worthless ... they just take up space in your Warehouse.
Cheers,
Tom