Oct. 7, 2008 San Francisco Chronicle — As of Oct. 1, however, the skygarden and the cavernous multilevel lobby are open weekdays between 9 a.m. and 3 p.m. to anyone who shows a photo ID and goes through a metal detector at the building entrance at 90 7th St.

Oct. 7, 2008 Taken by the Flickr user Amit's Bike and uploaded on October 7, 2008.

Oct. 7, 2008 Taken by the Flickr user Amit's Bike and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.

Oct. 4, 2008 Taken by the Flickr user ritaparada and uploaded on October 7, 2008.