Complex sentence: Only parts of the Van Mieu complex date back to the earliest period, although much of the architecture dates to the Ly (1010-1225) and Tran (1225-1400) Dynasties.
Split into simpler sentences: Only parts of the Van Mieu complex date back to the earliest period. Much of the architecture in the site dates to the Ly (1010-1225) and Tran (1225-1400) Dynasties.