Fast Gourmet, U Street
A gas station might not be your first thought when it comes to seeking out a fine meal. But just North of U Street is a gas station where the line for food is much longer than the line to fill up. This Uruguyan diner has plenty on its menu, but you're ordering the chivito, a sando loaded with meats (tenderloin, ham, and bacon, among others), hard boiled eggs, mozzarella cheese, and so many other things that the bread has a hard time keeping it all inside. Though, that won't stop you from adding a fried egg.
Embassy of Finland, Embassy Row
Easily the hardest reservation in town (sorry, Le Diplomate), this is a real treat for DC insiders. Once a month, the embassy hosts its Diplomatic Finnish Sauna Society for about two dozen guests. They get steamy in its luxurious sauna and also enjoy many traditional Finnish dishes (and drinks) in the dining room next to the sauna. You even get a diploma when you're finished! But to be a part of this small club, you gotta know who to ask. Here's a tip: the gatekeeper's name sounds like "sauna".