His major works include Lufthansa HQ in Frankfurt (2006),[1][2] 1 Bligh in Sydney (2011), Marina One in Singapore (2017),[3][4] Toranomon Hills Towers in Tokyo (2022),[5] and Stuttgart Main Station (2010-).

[8] Christoph Ingenhoven received international recognition in 1997 with the design of one of the world's first ecological high-rise buildings, the RWE Tower in Essen.

[9] Before, in 1991, the then 31-year-old Ingenhoven received a great deal of attention when he and his team competed in the international competition for the Commerzbank Tower in Frankfurt and shared jury prize with Norman Foster.

The fact that Foster was commissioned to build the skyscraper prompted Frei Otto to make a public statement in which he spoke out in favor of the young German architect's design.

[10][11] Christoph Ingenhoven is a founding member of the German Sustainable Building Council (DGNB) and the Bundesstiftung Baukultur, a federal foundation for architectural culture in Germany.