Chicago City Hall aerial 1

Detailed Description
A green roof was planted in 2000 on Chicago's 1911 City Hall building as a pilot project. (Patrick L. Pyszka, City of Chicago)
Sources/Usage
Public Domain.
A green roof was planted in 2000 on Chicago's 1911 City Hall building as a pilot project. (Patrick L. Pyszka, City of Chicago)
Public Domain.