Though the dollar's value has plummeted worldwide, there's one location where the greenback is more valuable than ever: the bar.

To attract fickle drinkers, some of the city's top (read: non-fratty) watering holes are offering drinks at Depression-era prices--or, in some cases, for free. Here's where to transform those stray bucks into a night out:

Blue Owl This East Village lounge's Wonderful Wednesdays special means a free specialty cocktail (like the gin-and-cherry-driven Barnstormer) from 5 to 6 p.m. 196 Second Ave. (between 12th and 13th sts.); 212-505-2583 or blueowlnyc.com

Bushwick Country Club On Sundays this summer, free Maker's Mark milkshakes and smoky barbecue will be allotted at this Williamsburg tavern, which sports a mini-golf course. 618 Grand St. (between Leonard and Lorimer sts.), Brooklyn; 718-388-2114 or bushwickcountryclub.com

Char No. 4 At Brooklyn's whiskey shrine (pictured), $1 buys a pour of Kentucky Gentlemen bourbon, served straight up or on the rocks. 196 Smith St. (between Warren and Baltic sts.), Brooklyn; 718-643-2106 or charno4.com

Ellis Bar Break out the piggybank: On Wednesdays from 9 p.m. to midnight at this Southwestern bar, a quarter gets you a shot of bourbon and free live bluegrass. 627 Fifth Ave. (between 17th and 18th sts.), Brooklyn; 718-768-0532 or ellisbar.com

Rusty Knot Ask for the "old man" anytime at this nautically themed haunt, and you'll be rewarded with a 99-cent glass of golden beer. 425 West St. (between W. 11th and Bank sts.); 212-645-5668