I lift at the golds in Greenbelt....Super nice gym....lots of big bro's....but absolutely no attitudes....also some fine looking women......If u haven't been to the DC/Bmore area it is different than say the midwest......There is only a handful of white guys that lift at the golds in Greenbelt....and its in a strip mall with a sex shop and wig shop....it looks like u would get ganked in the place....but I have not seen any trouble in the place and have lifted there for 4 years.
Columbia is about half way between DC and Bmore.
Shoot me a PM bro if u have any specifics....I will be more than happy to help.....you will like DC....it rocks!