Map of reclaimed land in Tokyo, colored by decade (1910s thru 1990s):
And the shaded areas in the following map, which is referenced in the following post: Walking on water: the underground rivers of Tokyo 東京の地下河川や運河の地図
The most interesting example of man made land in Tokyo are the daiba (defensive islands) built to protect against mid-19th century foreign visitors. Read more at: Odaiba, then & now: a visual history
Also of interest: plan for redevelopment and reclaimation of a landfill in Koto-ku, Tokyo. This site would become home to the new location of Ants Villa, the Christian church and social welfare group that originally started near Asakusa.
Ants Town agreed to leave Asakusa at the request the Tokyo government. In 1960 the community moved to “No. 8 landfill” 8号埋立地 , then a damp and isolated plot of reclaimed land on the edge of Koto-ku (深川区深川枝川町地先第８号埋立地).The land is seen in the planning document from 1964, and an aerial photo from 1945/1950:
See more at: Satoko Kitahara, Maria of Ants Town 蟻の町のマリア