This is actually from Saturday when we went to the Children's Village at the park. He found this little gutter of water and would crawl in, sit down, stretch his legs out and just sit. Then he'd crawl out, run over to the stairs, go up and back down, then rinse and repeat.
Then he found the water wheel and it was all over after that. He loves anything that spins so once he found that, he forgot about the gutter.