Yes, the stairs are just concrete with a hard troweled finish. We added indentations to provide traction on the stairs (and for historic authenticity). The vertical elements are hand parged (also known as a "sacking" the wall).

A word of advice, you probably want to hire one of the best concrete subcontractors in your area if you want results to look like this.

A bit about hard troweled finishes from another website: http://www.cement.org/for-concrete-books-learning/concrete-technology/concrete-construction/finishing-air-entrained-concrete

Hard troweling is a process by which a finisher uses a steel trowel to densify the surface of the concrete. This finish is optional and produces a hard, smooth surface. Repeated passes of steel troweling will result in a burnished finish, which has a mirror-like appearance. Hard-troweled surfaces are not recommended for exterior concrete slabs, because the smooth finish becomes slippery when wet.

- Carl Christianson