The Monument to the Revolution in Mexico City is a massive arch that commemorates the Mexican Revolution. Standing at 67 meters tall, it's considered the world's tallest memorial arch. Originally planned as a legislative building during Porfirio Díaz's regime, it was later transformed into a monument by architect Carlos Obregón Santacilia. The structure also serves as a mausoleum for key figures of the revolution, like Francisco I. Madero and Pancho Villa. Despite its somber purpose, it's a striking sight in the heart of downtown Mexico City, blending Art Deco and Mexican socialist realism vibes.