What can I say about this book that you already know without spoilers?

"The Beauty of the House is immeasurable; it's Kindness infinite".

Piranesi lives in a House (as he calls it) which has it's own ecosystem with tides and clouds. It's rooms are infinite. It's corridors are endless and the statues are looming. But Piranesi is not threatened by the House. He is living in harmony with the House and he believes that House in turn provides him with things he need.

Piranesi is a book that has you tongue tied. You want to gush about it all the time but you can't find the proper words. You want to show people how good of a book it is. But when you try to show, it vanishes.

Drawn from the real life inspirations, Piranesi teaches you how to appreciate the nature and it's infinite resources. It teaches you how to be grateful for whatever you are provided with. How important it is to be present in this moment, instead of dwelling on the past and contemplating future.

Of course these are not the main themes of the book, but these are my own observations after finishing it. Piranesi taught me that the destination doesn't matter as long as you enjoy the journey. 

"It does not matter that you do not understand the reason. You are the Beloved Child of the House. Be comforted.
And I am comforted."