Historic Greenpeace balloon flights include flights over the Berlin wall in 1983, over the US Nevada nuclear test site in 1987 and over the Taj Mahal during the nuclear testing protest in India in 1998.
The Greenpeace Google Search will also return results form http://archive.greenpeace.org - Greenpeace’s archive of web content dating back to 1994, along with content from those few Greenpeace websites not shared on this.