The first building I thought of was the Binoculars Building in Venice, CA.

Originally designed by Frank Gehry for Chiat/Day it's not part of Google's campus.

https://en.wikipedia.org/wiki/Binoculars_Building

My favorite is Bob's Java Jive

https://www.bobsjavajive.com/about

During summer road trip vacations growing up my family would always stop by “the big fish” for a family photo of the kids: https://en.wikipedia.org/wiki/The_Big_Fish_(roadside_attract...