This is the Washington Monument at night. Nahh this is El Obelisco and it commemorates the 400th year anniversary of the capital's founding and is the site of the Bicentennial Concert that I attended. It is located on the Avenida 9 de Julio which is the 12 lane street, the widest in the world. The place was completely packed with over 12,000 people attending. I would compare it to the Inauguration. Yeah, it was pure madness but totally worth it.