[3] From 1926 to 1928 Zongolopoulos worked as an assistant of the renowned architect Anastasios Orlandos in the Department of Restoration of Ancient and Byzantine Monuments of the Greek ministry of Education.

As a member of Ομάδα Τέχνη, he participated in various group exhibitions along with fellow artists like Spyros Vassiliou, Aginor Asteriadis, Dimitris Vitsoris etc.

He also participated in Hellenic National Art Exhibition[9] where he was honoured with a silver medal for his plaster-made sculpture, depicting Ariadne.

He also introduced a number of artworks made of bronze that are known for their architectural structure based on plates which were placed due to welding methods.

[11] The same year he received the second prize for his study in the national contest for the construction of a monument in memory of the victims of Kalavryta's massacre[12] while he served as an executive member of the European Culture Society from 1960 till 1968.

For his participation, he created an abstract bronze sculpture under the name Delphi, which was bought later by the municipality of Athens and it is located since 1989 in a major city's avenue close to the building of the National Gallery of Greece.

[14] The same year he was honoured by king Constantine for his contribution in Greek Art but he kindly avoided to attend the reception and to receive the medal.

A major factor during Zongolopoulos occupation with that genre was the usage of water power and light in his creations, which were mostly created with stainless steel.

[3] In 1973 Zongolopoulos created a 10 metres height sculpture under the name Diaphragm or Panels of Merlin which was placed the same year in Kolonaki, Athens, at the headquarters of a major insurance company.

[17] The following years (1978/1979) he participated in a group exhibition of 22 Greek painters and sculptors at Grand Palais complex in Paris.

The same period he also organised solo exhibitions in Athens, where he presented various artworks throughout his career, Thessaloniki and Paris (at Grands et Jeunes d`Aujourd Hui).

[3] During the 80s Zongolopoulos was distinguished for his proposals along with the prominent architect Alexandros Tombazis for the remodeling of Klafthmonos square in Athens and the construction of the Greek Resistance monument in Gorgopotamos.

[20] In 1997 Zongolopoulos created Tel - Néant, an artwork made by stainless steel and plexiglas[21] presented in that year's Venice Biennale and in 1999 exhibitions held in Berlin (Wittenbergplatz) and Weimar.

[22] In 1998, Zongolopoulos created another sculpture from stainless steel under the name Composition of Circles[23] or Olympic Circles[5] as a reference to the Olympic rings while the following year he created Column, a 21 m. high artwork presented at 1999 Venice Biennale and placed later near Evangelismos metro station, Athens.

[27] In 1933 Zongolopoulos met Eleni Paschalidou, a Greek from Moda region of Kadıköy in Istanbul who was a painter and student of Konstantinos Parthenis.