A panic has hit the real estate markets of Washington, D.C., Northern Virginia, and the Maryland suburbs, where 375,000 federal workers live.

Legislation to make the 202-year-old mansion and 1,240 acres around it a new state park in Loudoun County had sailed through the House and a Senate committee without a single vote against it.

A rich collection of historic artifacts and exhibits bring Loudoun County to life ... grandeur of days gone by thanks to a well-preserved mansion and lush formal gardens. Book a guided visit ...