Ancient Olynthos was a significant city in ancient Macedonia, located near the Strymon River. It was founded in the 5th century BCE and became an important center for trade and culture. The city is known for its well-planned grid layout and impressive public buildings, including houses with intricate mosaics. Olynthos played a crucial role in the Peloponnesian War and was eventually destroyed by the Macedonian king Philip II in 348 BCE. Archaeological excavations have revealed much about its daily life, economy, and urban planning, providing valuable insights into ancient Greek civilization.