Missing Post Office - Credit: Wikimedia Commons
The Missing Post Office (, Hyōryū Yūbinkyoku, "drifting post office") is an artwork by Japanese artist Saya Kubota. It is a "post office" where undeliverable letters are collected, using the former Awashima Post Office building on Awashima Island in Mitoyo City, Kagawa Prefecture. Read more on Wikipedia
Source: en.wikipedia.org