Following the decline of the Moche, two large co-existing empires emerged in the Andes region. In the north, the Wari (or Huari) Empire, based in their capital city of the same name. The Wari are noted for their stone architecture and sculpture accomplishments, but their greatest proficiency was ceramic. The Wari produced magnificent large ceramics, many of which depicted images of the Staff God, an important deity in the Andes which during the Wari period had become specifically associated with the Lake Titicaca region on the modern Peru-Bolivia border. Similarly, the Wari's contemporaries of the Tiwanaku empire, also centered around a capital city of the same name, held the Staff God in similar esteem. Tiwanaku's empire began to expand out of Titicaca around 400 BCE, but its "Classic Period" of artistic production and political power occurred between 375 and 700 CE. Tiwanaku is currently known for its magnificent imperial city on the southern side of Lake Titicaca, now in modern-day Bolivia. Especially famous is the Gate of the Sun, which depicts a large image of the Staff God flanked by other religious symbols which may have functioned as a calendar.