edifice

/ˈɛdɪfɪs/
noun
  1. A large, impressive building or structure.
    • The new library is a modern edifice with glass walls and a green roof.
    • The ancient edifice stood tall in the center of the city.
    • They toured the marble edifice that once served as a royal palace.
  2. A complex system of beliefs, ideas, or institutions, especially one that is large and established.
    • The legal edifice of the country was built over centuries.
    • They worked to dismantle the edifice of racial discrimination.
    • The entire edifice of his argument collapsed under scrutiny.
Antonyms