Following the decline of the Wari Empire in the late first millennium, the Chimú people, centered out of their capital city of Chimor began to build their empire on the north and central coasts of Peru. The Chimú were preceded by a simple ceramic style known as Sicán (700–900 CE) which became increasingly decorative until it became recognizable as Chimú in the early second millennium. The Chimú produced excellent portrait and decorative works in metal, notably gold but especially silver. The Chimú also are noted for their featherwork, having produced many standards and headdresses made of a variety of tropical feathers which were fashioned into bired and fish designs, both of which were held in high esteem by the Chimú. The Chimú are best known for their magnificent palatial complex of Chan Chan just south of modern-day Trujillo, Peru; now a UNESCO World Heritage Site. The Chimú went into decline very quickly due to outside pressures and conquest from the expanding Inca Empire in the mid-15th century.