Concept

Concept,

 

(Green) Question mark: Building/Construction/City

Green cube: Metal

 

So we are looking for a metal building or construction

 

Red Exclamation mark: City/Country/Flag

Red Cube: Red

Red Cube: Blue

Red Cube: White

 

So the building is in a city of country with the colors Red Blue White.

 

This makes the answer the Eiffel Tower in Paris/France

Done