Postal Horse-Coach Relay Roads

Timeline

1. c. 1490–1516Innsbruck · AustriaHoly Roman Emperor Maximilian I authorized Francesco von Taxis to create an imperial postal route running northwest from Innsbruck to Brussels, with fixed relay stations and standards for horse changes and relayed letter delivery, pioneering the modern organized postal system.
2. 1516–1618Augsburg · BavariaIn the mid-to-late 16th century, the Thurn und Taxis family extended the imperial postal route to Vienna, Prague, Madrid, Lyon, and other cities, forming a trunk network across Europe's core; Augsburg became an important mail-forwarding hub, and merchants and diplomatic envoys could pay to use the routes, advancing information flow and commerce.
3. 1618–1648Holy Roman Empire (various Central European theaters of war) · Holy Roman EmpireFrom 1621 through the 1630s, as the Thirty Years' War raged, the postal horse-coach relay roads carried high-frequency communications among the emperor, the papacy, the various states, and military commanders, becoming the nerve center for coordinating wartime diplomacy. Though some stretches were damaged by the conflict, the imperial trunk postal routes continued operating under the Thurn und Taxis family, their strategic value greatly increased, with mail delivery speed and frequency both enhanced.
4. 1650–1806Frankfurt · Holy Roman EmpireAfter the Thirty Years' War ended, the imperial postal route further opened to the public for passenger carriage and freight consignment, and the Thurn und Taxis family fully commercialized the postal service; after the Holy Roman Empire dissolved in the late 18th century, this system transformed into the modern national post offices, becoming the direct precursor of the modern European postal system.