I've always liked the Gaffney House, even though it's a bit PoMo for my tastes...

http://bcj.com/projects/gaffney-house/

Hearst Tower in NYC's always been interesting to me.

nice citizen.

David Chipperfield, Neues Museum, Berlin

and this one

Who had their head up their ass?

Obligatory Zumthor

Shelters for Roman Archaeological Site

Kolumba Museum

/\nice

so this one is old in new

Fragmente der Fassade, des translozierten Kaisersaals und des Frühstückssaals des Grand Hotel Esplanade

Helmut Jahn Sony Center enclosing the  fragment of Ottio Rehnig's facade of the Hotel Esplanade

the way it was

.

It is another project by Herzog & de Meuron, but how about this extension to the Musée Unterlinden, although it is perhaps not as literally "new in old"...more under?

Features an impressive staircase too...

I can't believe I forgot Maison de Verre!