Situated in a building that dates back to 1931, this classic diner is open 24 hours. A patty melt costs just $9.99, and a grilled-to-order, 8-ounce choice steak and eggs runs for $18.99. Plus, there are 20 flavors of milkshakes.

Those seeking a true greasy spoon experience won’t find it at this polished modern diner in Adams Morgan, but they will find a solid 24/7 spot that serves bread pudding French toast sticks and a Ragin’ Cajun omelet with andouille sausage and shrimp. On top of a full breakfast menu, dinner and lunch options span from chili cheese fries (or tots) to a nacho burger and a Thanksgiving-style turkey platter.

Open until 4 a.m. on weekends in Adams Morgan and on 14th Street NW, Amsterdam Falafelshop is an obvious choice for anyone looking to soak up alcohol with fries and falafel balls. A wide range of dips and Middle Eastern condiments make it that much better.

This converted rotisserie chicken joint right off U Street NW serves Jordanian chicken shawarma that rotates over coals on horizontal spits before being rolled in flatbread with pickles and garlicky toum spread. It’s open until 2 a.m. on Monday through Thursday and 4 a.m. on Friday and Saturday. There’s now a second location in Georgetown.

Hulking burgers and fried chicken sandwiches are classic late-night food, and Lucky Buns has versions that incorporate a number of Australian and Southeast Asian ingredients to satisfy adventurous eaters. There are also spice bags full of fried chicken tossed with peppers, onions, chiles, and Sichuan peppercorns. Dinner runs until 11 p.m. seven days a week, but from Thursday through Saturday there’s a late-night supper menu.

Ben's Chili Bowl serves iconic half-smoke sausages smothered in chili until 2 a.m. during the week and until 4 a.m. on Fridays and Saturdays. Just be prepared for a long line.

The undisputed champ of Eater's very scientific late-night jumbo slice crawl, Ducinni's serves up oversized slices of pizza until 5 a.m.

This new Korean pub from the Chiko owners has a tight late-night menu at the first-floor bar that’s available until midnight Sunday through Thursday and closes at 1 a.m. on Friday and Saturday. Options include spicy Korean fried chicken with a white barbecue sauce, kimchi slaw hot dogs, and a spiralized fried potato on a stick with furikake and citrus aioli.

The downtown crowd can order shrimp tacos and quesadillas to-go at Surfside Taco Stand, open 24/7 and located just south of Dupont Circle.

The bar replaced Smoked & Stacked in Shaw with a goal to cater to late-night appetites with a simple menu of smoked wings and grilled cheese sandwiches. In the latter category, there’s an OG with just cheddar and a Reuben option with pastrami, Swiss, sauerkraut, and Russian dressing. Food is served until last call every night of the week.

Open until 4 a.m. on Fridays and Saturdays in Dupont and Adams Morgan, Julia’s slings $5 empanadas. A couple standbys are a Chilean style — filled with beef, raisins, and olives — and a Bolivian saltena packed with chicken, potatoes, and green peas.

New Big Wong dishes out late-night Cantonese and Sichuan cuisine until 5 a.m. on weekends and 3 a.m. on weeknights. In Washington, it’s known as a favorite hangout for chefs looking for a bite after work.

It’s not jumbo slice, but it is about as good as New York style pizza gets in D.C. Wiseguy serves up pizza, garlic knots, and chicken rolls until 5 a.m. on weekends.

For an assortment of bar snacks, breakfast platters, and half-pound burgers, head to Capitol Hill's iconic Tune Inn, which serves food until 2 a.m. on Fridays and Saturdays (about an hour before closing), and till 1 a.m. every other night.

Mixologist-turned-rum distiller Todd Thrasher’s multi-level tiki bar at the Wharf development serves a late-night menu from 11 p.m. until close — last call is usually 1 a.m. — that includes $4 beers, $5 rum drinks, $6 snacks like tater tots or crystal shrimp dumplings, and $13 tiki wings or flatbreads.

The bone-in chicken karahi — a soulful Pakistani curry brimming with fresh ginger and hot peppers — provides a late-night jolt at a trusty trio of kebab houses within a couple square blocks of each other in Arlington. Expertly marinated kebabs and special samosas topped with tender, spied chickpeas are also recommended orders. Ravi is open — and packed — until 2 a.m. on Fridays and Saturdays and 1 a.m. from Monday through Thursday.