An oft repeated but nevertheless effective shot that meets the challenge.
These type of shots always work well because they lend themselves to an easy and straightforward composition, they also easily hold our attention on the main subject, the stairwell.
I like your mono conversion you have a near full range of tones with good contrasts, it suits the subject very well indeed. The exposure is spot on with full detail throughout, the brickwork is excellently rendered. There is so much detail here to feast your eyes upon, it really is lovely.
I think I understand why you have titled it the way you have, not just for the number and steepness of the steps but those metal treads look extremely unforgiving should you slip, ouch! Thank you for another interesting entry, Sid
Love the B&w tones for it perfectly suits the composition. My eye is really drawn to the spiral movement of the staircase as it winds its way up to the top. I really like how you have the spiral emerging from the top right corner. Congrats on making it in the top 20 Janine!!!
You have gotten your Fibonacci on quite well here. There is an upside down Escher feel, and I feel the malevolence of abstract dragons and primordial aggressive nautilus creatures, however, the window in the top right brisk appears unplanned, and hurts the illusion a bit.
Nice composition. I am always drawn in by these circular stairways that have interesting textures. Maybe because I live in a place that doesn't have a building higher than 3 stories! Ha ha, no stairways for me to shoot in my home town!