📜 Interior of Washington Monument features 193 unique commemorative stones, donated by states, cities, countries, and organizations. Look closely at the exterior, and you’ll also notice a distinct marble stripe from different construction periods, commemorating George Washington. # Why Go 🏛️ Explore hidden historical and political messages within the commemorative stones. 🌍 See unique materials like jade, petrified wood, and Parthenon marble. 👀 Discover a lesser-known interior feature of a famous landmark. 🏛️ Witness a unique architectural detail on the exterior. 🧐 Learn about the monument's complex history. 📸 Capture a historical visual anomaly. # Why Avoid 🎟️ Timed tickets required for interior access, often sell out fast. 🚫 Stones only visible during elevator ride down from observation deck. # Tips ⏰ Arrive early for free same-day tickets at the lodge (ticket distribution daily from 8:45 a.m.). 💡 View stones during the elevator descent. 👀 Look closely at the exterior to spot the color change. # Cost 💰 Tickets required for monument entry (free same-day tickets available). # Hours 🕒 Daily 9:00 a.m. - 5:00 p.m., closed Independence Day, Christmas, and one day monthly for maintenance.