Can you have too many tulips?

No.

Keukenhof: "also known as the Garden of Europe, is the world's largest flower garden. (And boy, is it ever!) It is situated in Lisse, the Netherlands. According to the official website for the Keukenhof Park, approximately 7 million flower bulbs are planted annually in the park, which covers an area of 32 hectares." (Wikipedia)

I could have spent many more hours here. It's mind-blowing the amount of tulips they have and the varieties...the gardens go on and on and on. Keukenhof leans toward a touristy-theme-park environment, and although I prefer a more naturalized design-style - I enjoyed it more than I initially thought I would. It kept me smiling.