The Planning Subcommittee is concerned with the overall physical and economic pattern of Washington, D.C. in terms of land use, public facilities, and transportation routes and systems. Washington, D.C. has a unique physical development pattern that in some respects is unique among American cities.  Certain features need protection and enhancement, while some areas and features need remedial attention where the development pattern is inadequate.  The Committee of 100 on the Federal City has a long history of concern with the planning for the city, both in terms of the monumental center of the city and with outlying neighborhoods, and ranging from overall patterns to small scale features.