frontispiece

/ˈfrʌntɪspiːs/
noun
  1. An illustration or decorative design that appears on the page facing the title page of a book.
    • The old novel had a beautiful engraved frontispiece showing the main character.
    • Many classic books include a frontispiece portrait of the author.
    • She opened the book and admired the colorful frontispiece before reading the first chapter.
  2. The main or central part of a building's facade, especially an ornamental one.
    • The frontispiece of the cathedral was covered in intricate stone carvings.
    • Architects designed a new frontispiece for the library to make it more welcoming.
    • The museum's frontispiece features tall columns and a grand entrance.