Open for lunch and dinner. Very famous. Supposedly every recipe on the menu is over 100 years old (hence the name "Cien Años", one hundred years). Some recipes supposedly date back to Aztec times. Menu includes a number of items such as corn fungus, and bone marrow soup. Gringo-friendly but Spanish is useful. Restaurant is small, with beautiful decor, and a relaxing atmosphere. Prices range from moderate to expensive.