I don’t find anything nostalgic on those two photos. There was no ferris wheel in my home town where I spent my time when I was a child, nor I have no good memories about it. Just I find myself taking similar picture anywhere, anytime. Empty thing might be also a part of nostalgia.
A contribution to A Photo a Week Challenge: Nostalgic by Nancy Merrill Photography.
l'atelier tanu | tagnoue 
Its been years since I have been on a ferris wheel..
Brings back memories.
Those kind of special things sometimes bring back our memories sinking into a deep heart.