What is this ornamental, yellow flower that looks like a smooth pineapple skin?
This is a beehive ginger, Zingiber spectabile.

Its inflorescence will become a bit different sometime soon:



I believe the one in your image is not yet fully developed, like this one here:



Source of the images:


http://www.geneticjungle.com/2008/08/deceptive-petals-7-orchid-mimics.html
http://specialflowersintheworld.blogspot.com.au/2015/04/zingiber-spectabile-flower.html