This is a guest post from Gary Sharma (aka “The Guy with the Red Tie”), founder and CEO of GarysGuide and proud owner of a whole bunch of black suits, white shirts and, at last count, over 40 red ties. You can reach him at gary [at] garysguide.com.

So you all probably know about the High Line. But have you heard about the LowLine? Cofounders Dan Barasch and James Ramsey are aiming to convert an abandoned trolley terminal beneath Delancey Street into an extraordinary subterranean public park. That's right--it's an economic revitalization opportunity.

But it's more than that. It also represents cutting-edge design and a new generation of green technology and  lies at the heart of a broader global discussion about the potential of remnant urban infrastructure and the need for cities to reinvent the meaning of space--above and below ground.

So go check it out, get involved and if you're living it up in the Hamptons these days, make it out to their Cocktail Fundraiser at Water Mill on August 4, organized by Mo Koyfman of Spark Capital and others.

Don't forget to sign the Declaration of Internet Freedom, either--that is, if you haven't already done so. It's being signed by all of us folks who believe that a free and open Internet can bring about a better world!

And now let's see whats going down in the Alley this week...

BarTech: Retro Computer Show & Mixer!
Where else will you be able to play with the first "portable" (or luggable, anyway) computer, the PONG home gaming system and floppy disks that are bigger than your head!
Monday (July 23), 6 p.m. @ Alley NYC, 500 Seventh Avenue, 17th Floor

MakeIt NYC July Maker Show-And-Tell
Featured guest are Bitbanger Labs, the creators of Remee, a user-programmable lucid dreaming mask. Yes, you heard me right.
Tuesday (July 24), 7 p.m. @ Houston Street Center, 273 Bowery

Google NYC Tech Talks: The Distributed Camera: Modeling the World from Online Photos with Noah Snavely
We live in a world of ubiquitous imagery. The number of images at our fingertips is growing at a seemingly exponential rate. Taken together, these billions and billions of images can be thought of as constituting a distributed camera. Want to learn more?
Wednesday (July 25), 5:30 p.m. @ Google NYC, 111 8th Avenue

Fashion 2.0: The Future of Digital Publishing
With Simone Oliver (Fashion Editor, New York Times), Melanie Schnuriger (GM, fashion & beauty digital media, Hearst Magazines), Matt Edelman (CEO, Glossi.com) and Jake Levine (GM, Digg).
Wednesday (July 25), 6 p.m. @ Scandinavia House, 58 Park Avenue

DreamIt NYC Tech Olympics sponsored by Silicon Valley Bank
Competitions will include: ping-pong, foosball, soccer shootout, air races and rock paper scissors. Prizes and medals will be awarded! There will be plenty of beer, snacks, fine conversation, and very little bloodshed.
Wednesday (July 25), 6:30 p.m. @ DreamIt Ventures NYC, 330 W. 38th Street, Suite 300

SMASH Summit with 500 Startups, Fred Wilson, & More
Learn how to hack and dominate customer acquisition. Covering new “hack-tics” & strategies for Pinterest, Facebook, YouTube, Twitter and more.
Thursday (July 26), 9:30 a.m. @ Crowne Plaza Hotel, 1605 Broadway

Social Retail Summit Summer 2012
With Ashley Heather (cofounder & CEO, Dotbox), David Goldberg (president, StyleCaster), Fatma Yalcin (cofounder & CEO, Curisma), David Fudge (director of consumer engagement, Bonobos), Mark Curtis (founder, Enter:New Media). Moderated by Liza Kindred (Third Wave Fashion).
Thursday (July 26), 3 p.m. @ The Dumbo Spot, 160 Water Street, Brooklyn

Digital DUMBO July
A celebration of the city's innovation spaces.
Thursday (July 26), 6:30 p.m. @ Dumbo Loft, 155 Water Street, Brooklyn

Queens Tech Meetup 2
With Skillshare, OKFocus, Aereo and Brooklyn Bridge Ventures.
Thursday (July 26), 7 p.m. @ Hunter's Point Plaza, 47-40 21st Street, 10th Floor, Long Island City

Inside Startups Club, Featuring Fitocracy, Sonar, and Vimbly
Featuring speakers Richard Talens (cofounder & CTO, Fitocracy), Jared Cocken (chief product officer, Fitocracy), Brett Martin (founder & CEO, Sonar), and Sam Lundin (founder & CEO, Vimbly).
Thursday (July 26), 7 p.m. @ OMGPOP / Zynga NY Office, 166 Crosby Street, 11th Floor

More events on the horizon...
CrowdFunding Conference on Jul 30 @ NY Hilton
Inside BizDev: How Ad Agencies Can Make Big Brands Love You on Jul 30 @ General Assembly
UWS Startup Breakfast on Jul 31 @ Aroma Espresso Bar
Social Curation Summit on Jul 31 @ New Yorker Hotel
August NY FinTech Startups Meetup feat. Second Market on Aug 01 @ Day Pitney Law Offices
eCommerce Hack Day 2012 on Aug 04 @ Alley NYC
Design for Manufacturing Summit on Sep 20 @ Dumbo Spot

Until next week. Stay thirsty social, my friends! ;)