Both towers are located in Ikoyi, were built when both officials held posts in goverment. Both towers have been subjects of EFCC investigation and petitions from aggrieved stakeholders.

Donald Duke No. 9 A Gerard Road, Ikoyi, Lagos known as ‘ ADMIRALTY TOWERS’. The property is a Three Sets of High Rise luxury Flats. Presently it is rented to some multinational oil firms.
http://saharareporters.com/2008/07/11/open-letter-efcc-investigate-donald-duke

While Alison Madueke property Building 3, Block B, is a 15 storey edifice comprising 18 flats and 6 penthouses, Bella Vista at Plot 1, Zone N, Federal Government Layout, Banana Island Layout, Foreshore Estate, Off Onikoyi Road, Ikoyi, Lagos.


Diezanni 15 story tower (First picture) and Donald Duke Admirality Towers (Second picture) shown below.

Diezanni Madueke has better taste in the architecture design.

Both from the Niger delta hmm

Danielmoore:
Both from the Niger delta hmm

Niger Delta leaders always invest most of their loot in Ikoyi and Banana Island.