The concept to design logo for the event “ACT FORUM’19” is based on four professions that Architect Council of Thailand is involving with, which are Architecture, Urban Architecture, Landscape Architecture, and Interior Architecture. The design team has designed the logo based on the isometric structure, there are various lines intersected to each other, similar to architecture’s drawing. The composition of the alphabets are visually put in angles to create corners and space, in order to illustrate the exterior and interior of the buildings. Different words and phrase have been designed in many compositions because isometric structure allows the flexibility within the usage, where the main concept is also still there.