Brooklyn Tunnel Tour
The Atlantic Avenue Tunnel is officially the world’s oldest subway tunnel. This narrated walking tour of the tunnel is led by Bob Diamond, who rediscovered the tunnel in 1980. The tour meets at the old Independence Bank building at the SW corner of Atlantic Avenue and Court Street, under the clock. Wear sneakers or boots and bring a flashlight. Reservations are required so call 718-941-3160 for reservations and further information. UPDATE: The tour is fully booked already.
Sunday, February 22. 1:15 p.m. $15.

Park Slope UMC’s 16th Annual Book & Media Fair
Park Slope United Methodist Church’s popular Annual Book Sale is back. There will be thousands of new and used books, CDs, DVDs, tapes, and records as well as a children’s corner with books, videos, DVDs, games, and puzzles.
Saturday, February 21 and Sunday, February 22. 8:30 a.m.-4:30 p.m. & 12:30-4:30 p.m. Park Slope United Methodist Church, 410 Sixth Avenue.

Winter Pop-Up Flea
This weekend, Refinery29 will be the guest curator for the Dumbo Winter Pop-Up Flea. The Flea features 35 top vintage/antique vendors of furniture, clothing, objects, jewelry, curiosities, accessories, art, lighting, and food. For more details on all the vendors, click here.
Saturday, February 21 and Sunday, February 22. 11 a.m.-6 p.m. 76 and 81 Front Street.

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CIBS Symposium on “Strategies for Dealing with the Economic Environment”
The CIBS (Coalition for the Improvement of Bedford-Stuyvesant) Asset Building Network is having a press conference and symposium. The symposium is titled “Strategies for Dealing with The Economic Environment.” David Ushery, Anchor for WNBC 4, will moderate.
Saturday, February 21. 10 a.m.-3 p.m. First AME Zion Church, 54 McDonough Street.

Brooklyn Clothing Exchange Swap Meet and Bake Sale
Bring clothing, shoes, or accessories (scarves, hats, bags, etc.) in good condition and/or a donation for the Community Space. Home-baked goodies will also be available.
Sunday, February 22. 1-4 p.m. 123 Community Space, 123 Tompkins Avenue.

Brooklyn Conservatory of Music Presents An Evening with Cedar Walton
Jazz legend Cedar Walton will be at the Brooklyn Conservatory of Music. Also included will be the Cedar Walton Trio and Octet.
Saturday, February 21. 8 p.m. $15-50. Long Island University (Brooklyn Campus), Kumble Theater, 1 University Plaza.

Premium Sake Tasting
Gnarly Vines is hosting a premium sake tasting and pairing it with sushi rolls from Yamashiro.
Tonight. 6-9 p.m. Gnarly Vines, 350 Myrtle Avenue.