Possible Clues:

• Reminder one's given in passing
• Lasting reminder
• Monument marking an event or person’s life
• Many a National Mall landmark
• The Taj Mahal, for example
• It commemorates a person or event
• Monumental spread maybe gripping pollsters
• With 35-Across, May celebration
• Note, foreign money, brass? Could be
• It's a reminder almost to one leader of the mob in The Cenotaph