Whether you entertain 50 VIPs at a formal dinner, 100 business associates at a sales luncheon, 200 friends at a wedding reception, or 5,000 conventioneers at an outdoor gala, you"ll find no more elegant and romantic place to host a gathering than Washington, D.C. and suburban Maryland and Virginia. Organized by the number of participants a site can accommodate, the possibilities include embassies, famous galleries and museums, riverboats on the Potomac, and the former home of a president.