Marlon Blackwell's St Nicholas Church:

Peter Zumthor's De Meelfabriek, currently under construction:

Adaptive reuse, loft, industrial buildings converted

It is sometimes difficult to find examples where this drastically impacts the design as steel framed buildings are often pragmatic and standardized for ease of construction and economy, but the trend of loft conversions often leaves steel and beams and occasionally industrial equipment exposed as built in artifacts when a building is renovated.

Over and OUT

Peter N

Also that art museum in Paris that used to be a train station, I can't think of the name.

Musee d'Orsay

http://www.musee-orsay.fr/en/collections/history-of-the-museum/the-architecture.html

And this one was also a train station in Chile, 

http://www.estacionmapocho.cl/historia/

http://en.landschaftspark.de/the-parkk/introduction

The High Line:

http://archinect.com/news/article/122600458/newark-to-convert-steel-factory-into-world-s-largest-indoor-vertical-farm

http://mayfaircollection.net/

That was a former distribution warehouse. They tore town about 1/3  of the building for parking, used the existing structure and gave it a new face. Not the most exciting of projects, but it's much better than a Class S warehouse that was vacant for a decade.

One fairly recent project that comes to mind is the re-use of an industrial glass furnace building at Corning as the location of their new hot glass theater adjacent to the new contemporary gallery built by Thomas Phifer

I couldn't figure out how to link the steel frame photos from flickr but there are a bunch here.

https://www.flickr.com/photos/corningmuseumofglass/8890817869/

Here is a before

and almost done shot. Its the black building to the right.

Here is a nice drawing they did as well.