Yes, you can view the Lincoln Memorial at night, and many locals and tour guides actually recommend it as the best time to visit. The memorial is open to the public 24 hours a day, 365 days a year. At night, the monument is beautifully illuminated by powerful floodlights that highlight the texture of the Georgia white marble and the dramatic features of the Abraham Lincoln statue. The atmosphere is significantly more quiet and reflective than during the busy daytime hours, and the view looking out across the illuminated Reflecting Pool toward the Washington Monument is iconic. While National Park Service rangers are generally on duty from 9:30 AM to 10:00 PM to answer questions, you are free to walk up the steps and enter the chamber at any hour of the night. It is considered very safe due to its location on the National Mall, which is well-patrolled and remains a popular spot for evening "monument walks" in the nation's capital.