Photo by jsmjr on Flickr.

Tonight is the latest in our series of Greater Greater Washington happy hours. Join us at Biergarten Haus, 1355 H Street NE, starting at 6:30.

There are happy hour drink specials until 7:00, but we’ll of course stay longer than that. You can get there by X1, X2, X3, X8, or B2 buses, bicycle, car, or if you have a time machine, go into the future, ride the streetcar, then come back to tonight for the party.

Alexandria Old and New: The next terrific CSG walking tour is Alexandria, this Saturday from 11-12:30. Starting at King Street Metro, the tour will cover part of Alexandria’s historic gridded Old Town, then go through Carlyle and other newer developments ending at Eisenhower Avenue Metro. RSVP is required.

What do you want from open data? On Monday, July 19, I’m leading a RAC committee meeting with the WMATA staff in charge of Transparent Metro Data Sets. This is a great chance to find out more about plans to open up data and to give feedback for data sets to open, legal terms and conditions, and more. It’s in the ground floor committee room of WMATA HQ, 600 5th Street NW, left and then right past security.

Two diametrically opposite pedestrian projects: There are public meetings on adjacent days for two studies that involve pedestrians along major boulevards from DC to western Montgomery County. But they couldn’t be more different.

On Tuesday, Montgomery County DOT is having their latest meeting on the Medical Center “pedestrian crossing” project that morphed from transit access and an opportunity for a new Metro entrance into interchanges to speed traffic. The meeting is at Bethesda/Chevy Chase High School, Tuesday, July 20 at 7:00 pm.

Then on Wednesday, Connecticut Avenue Pedestrian Action will present the prelimiary results of their study, which actually aims to help pedestrians along the busy street from Woodley Park to Chevy Chase. There’s an open house at 6:30 and a formal presentation at 7, at UDC Building 44 (on Van Ness Street) in room A03.