Did you know about the existence of WITHGOOGLE.COM? Wow, it’s like a box full of treasures. Check out some of the interesting things you can find hidden in this mysterious domain (and other classified folders):
http://www.cs-first.com/home
https://www.google.com/culturalinstitute/home
https://www.google.com/opengallery/?hl=en
https://nightwalk.withgoogle.com/en/panorama
https://www.google.com/culturalinstitute/browse/?projectId=world-wonders&hl=en
And even more!
https://www.chromeexperiments.com/