On Friedl mit der leeren Tasche followed Siegmund der Münzreiche as Prince of Tyrol. Siegmund of Tyrol (1427 - 1496) had the worst possible start to his reign. When his father Frederick IV died, Siegmund was only 12 years old. His uncle Frederick III, Emperor of the Holy Roman Empire and father of Maximilian I, therefore took him into involuntary custody and guardianship. You could say that Siegmund began his career as a hostage of the emperor, his own cousin. Tyrol was now a rich county and the emperor was reluctant to relinquish direct control over it. It was only when the Tyrolean estates protested against this paternalism that Siegmund was able to take office. The Tyrolean Diet had taken over the reins of government in the absence of a sovereign prince, thereby demonstrating its political clout. At the age of 18, Siegmund moved to Innsbruck to take over the official duties. Four years later, he married Eleanor of Scotland (1433 - 1480), the visually unattractive 16-year-old daughter of King James of the House of Stewart. The marriage was to remain childless.

Siegmund issued Siegmund the Schwaz mountain regulationswhich was to become the model for all Habsburg mines. Mining officials were given more rights within their sphere of influence, similar to the universities. There were special regulations for miners within society, as they were a highly sought-after labour force. One can speak of an early social and labour law agreement. The miners worked hard, but earned relatively well. The same applied to the mint and the salt works in Hall. Urban life in Innsbruck and the surrounding area also attracted new trades. In Mühlau, the Plattnerei established itself as a high-quality metal trade. The people employed in this new industry formed a kind of middle class with greater purchasing power. The demand for meat increased. This led to a change in agriculture. In villages close to the city, such as Pradl and Amras, or in the Tyrolean lowlands near the Hall and Schwaz mines to the east of Innsbruck, farmers discovered livestock farming as a more lucrative source of income than arable farming. To this day, the types of cultivation in the different regions of Tyrol vary greatly.

In 1484, Siegmund had the mint moved from Meran in South Tyrol to Hall, which earned him the nickname Siegmund der Münzreiche brought in. For the small town of Hall, which was located in the immediate vicinity of Innsbruck, as well as for Innsbruck itself, this meant an immense increase in value. In reality, however, despite the rich land he had inherited from Frederick IV, Siegmund was not particularly rich in coin, unlike his father, due to his opulent lifestyle. His second marriage was to Katharina of Saxony (1468 - 1524), a lady from a highly aristocratic electoral family. It was probably also thanks to the influence and court behaviour of Siegmund and his two wives that the expenditure of the Coin rich exceeded the income from taxes, salt works and mines in the long term. At the royal wedding in 1484, the bride's procession alone comprised 54 carriages. The guests had to be accommodated and catered for in Innsbruck. Even with a wife 40 years his junior, the now senile Siegmund was granted a male heir, which must have been particularly bitter for him considering the 30 children he was rumoured to have fathered out of wedlock.

Innsbruck flourished under Siegmund's court and coffers. During his opulent reign, the city became a centre of attraction for craftsmen, goldsmiths and artists. The city tower near the Old Town Hall as an expression of the city's prosperity and the first parts of the Hofburg were built under Siegmund. A glass painter settled in Innsbruck and established the tradition of glass painting in Innsbruck. Around 1900, the resulting Stained glass Innsbruck in today's Glasmalereistraße, one of the world's leading companies with branches in New York and Munich. The court library grew in step with Siegmund and Eleonore's humanistically scholarly guests. Both were considered art-loving and interested in literature. Before the invention of printing, books were an expensive hobby. Travellers and showmen were also welcome at court to entertain local and international guests.

At the same time, times became tougher for those who could not keep up with the new pace of life in the city. It can be assumed that there were around 2000 townspeople at this time. Sigmund's court probably consisted of 500 people, not including his wife's court. These "strangers" caused a sensation in Innsbruck. The gap between the social classes grew. The witch trial of 1485 took place in a climate of envy, resentment and scepticism towards the new customs that had arrived in Innsbruck.

Siegmund was not the most successful ruler of Tyrol, but is still fondly remembered today thanks to his services to the cultural upswing in Innsbruck. At the end of his reign, his court was overly bloated and expensive. A lost war with the Swiss Confederates obliged him to make payments, and a war with Venice also ended badly. Siegmund had to hand over Habsburg possessions in Alsace and what is now Breisgau to Charles the bold of Burgundy, the future father-in-law of Maximilian I. He sold the Austrian Forelands to the Duchy of Bavaria for a ridiculously low price and pledged the Tyrolean silver mines to Jakob Fugger. The Bavarian Wittelsbachs wanted to bring Tyrol back under their control through an inheritance agreement with Sigmund, who was mentally deranged due to his age. Only imperial pressure and the hasty intervention of the Tyrolean estates and Maximilian made it possible for the land to remain with the House of Habsburg.