Can anyone give suggestions as to some memorable dining spots in DC? We will be staying near the White House in mid-March.

The cuisine is flexible, but we are specifically looking for a non-chain, not-to-miss restaurant for lunch or dinner.

We want it to be spectacular--outstanding in presentation, taste, and/or location.

We don't mind spending good money for dinner as long as the experience is memorable.

Thank you all for your suggestions!

Kevin