I am a big fan of street installations, which are a kind of guerrilla art where the artists place sculptures in an environment with the goal of amusing, confusing and or provoking onlookers.
Here's a collection of some particularly good ones.
This is not a diary. It is a collection of thoughts, essays, stories, etc on those topics that are of interest to me. Being a blog, it goes without saying that it is utterly self-indulgent.