A major fire in 1908 struck the downtown area and completely changed its appearance. It was rebuilt with a uniform architectural style inspired by the city of Boston: three-story buildings combining shops and apartments.

In the 20th century, the city became an economic hub thanks to the pulp and paper industry, benefiting from the natural resources of the Mauricie region. Four large factories were established, each attracting numerous workers, thereby accelerating demographic and economic growth. In 1927, Trois-Rivières was recognized as the world capital of newsprint.

Throughout the ages, Rue des Forges has always been a place filled with shops, restaurants, and social life. Even today, Rue des Forges remains the heart of Trois-Rivières' vitality.

Built in 1854, the Cathedral of the Assumption of Trois-Rivières is the mother church of the diocese. It was completed by Monseigneur Laflèche and later expanded. The cathedral features a neo-Gothic style inspired by the Trinity Church in New York, along with elements from Westminster. Inaugurated in 1858, it remains the tallest building in the city today. It houses 125 stained glass windows by Guido Nincheri and a Casavant organ with 5,751 pipes

The statue at the back of the garden depicts Maurice Duplessis. Born in Trois-Rivières in 1890, he was the prime minister of Quebec from 1936 to 1939 and from 1944 to 1959. Nicknamed 'Le Chef' (the Chief), he left a significant mark on 20th-century Quebec. It was during his leadership that Quebec's flag, the fleurdelisé, was adopted in 1948.

Over the years, the location of Place Pierre Boucher has been a central point in the life of Trois-Rivières. It was the site of the first governors' residence, the first seminary, and the first parish churches. All these buildings were destroyed in the great fire of 1908.

Today, Place Pierre Boucher features the Monument aux Braves, inaugurated in 1921. It pays tribute to the Trois-Rivières regiment, which was the Canadian regiment that remained at the front the longest during World War I, being 450 days. The torch was erected in 1934 during the celebrations of the city's 300th anniversary. There is also the Monument of the Sacred Heart, marking the location of the parish church destroyed in the 1908 fire.

The Manoir de Tonnancour, built in 1723 by René Godefroy de Tonnancour, has served many purposes, including as a residence, store, and officers' barracks during the English regime. Later, it functioned as a rectory and bishopric before becoming a primary school. It is one of the oldest houses in Trois-Rivières. Since 1972, the Galerie d’art du Parc has held around ten exhibitions and artistic events annually, showcasing the diversity of contemporary art in its various forms.

St. James Church, on the other hand, was built by the Recollets in 1693 and later rebuilt in stone in 1754. After the Conquest in 1760, the residents of Trois-Rivières laid down their arms and swore allegiance to King George II of England. At this point, the church became an Anglican place of worship. Between 1779 and 1823, it also served as a hospital, apothecary, courthouse, and prison.

The Hertel House is a heritage building that houses EMA. The Boutique Space offers works by creators from Trois-Rivières and beyond, while the Gallery Space is an exhibition and diffusion hall for arts and crafts.

In fact, the bust of Pierre Gaultier de Varennes, Sieur de La Vérendrye, stands before the monument. At the age of 46, he set out to explore the western part of the country with around fifty companions, including three of his sons. This expedition lasted 12 years. He is credited with being the first white man to reach the Rocky Mountains.

That being said, the absence of these men often made them poor husbands. This explains the low number of Filles du Roy who settled in the region. Out of eight, we count Marie Allence, Jeanne Bouchard, Jeanne Dodier, Jeanne-Léonarde Genest, Marie Grandin, Marie Gravois, Michelle Ouinville, and Élisabeth Prévost. honors these men. Among those mentioned are Jean Nicolet, a truchement or interpreter; Pierre Pépin, an explorer; Pierre-Esprit Radisson and Médard Chouart Sieur des Groseilliers, founders of the Hudson's Bay Company; and Christophe DuFrost de La Jemmerais, who participated in La Vérendrye's exploration.

In fact, the bust of Pierre Gaultier de Varennes, Sieur de La Vérendrye, stands before the monument. At the age of 46, he set out to explore the western part of the country with around fifty companions, including three of his sons. This expedition lasted 12 years. He is credited with being the first white man to reach the Rocky Mountains.

That being said, the absence of these men often made them poor husbands. This explains the low number of Filles du Roy who settled in the region. Out of eight, we count Marie Allence, Jeanne Bouchard, Jeanne Dodier, Jeanne-Léonarde Genest, Marie Grandin, Marie Gravois, Michelle Ouinville, and Élisabeth Prévost.

Another fascinating feature of the Turcotte Terrace is its stained-glass windows. This initiative, led by Jean Beaulieu, a glassmaker artist who used art as a means of social transformation. It provided opportunities for more than 44 socially excluded and homeless youth. This project helped reintegrate them into the workforce. The stained-glass work depicts, among other things, the arrival of the Ursulines, photographer Pinsonneault, Maurice Duplessis, and the great fire of 1908.

This founding site, called the 'Platon,' is perfectly suited for the commemorative monuments located there. First, at the center, is the monument to Laviolette, founder of the city. Behind it is the plaque of the 'Catalogue des Trépassez,' recounting the arrival of the first settlers. Not far to the east is the plaque of the fort of Trois-Rivières, and to the west, the 150th anniversary of the 12th Armored Regiment of Canada, one of the first military regiments in the country, is highlighted.

Moreover, the Saint Lawrence River, which originates from the Great Lakes, stretches nearly 4,000 km to reach the Magdalen Islands. Its shores are composed of rich and fertile lands. The fertility of these lands results from the melting of glaciers that created the Champlain Sea around 12,000 years ago. This explains why nearly 80% of Quebecers live within 40 km of its banks today.

The river has always been an excellent means of transportation. Although its shores were used for docking at the start of the colony, it wasn't until the advent of steamships that proper infrastructure was established at the port of Trois-Rivières, in 1809.

Before the arrival of Europeans, Indigenous peoples already visited the Saint-Maurice River region, then called Metaberoutin in Atikamekw. This included the Atikamekw to the north, the Anishinaabe to the west, and the Abenaki from the south, who came to trade there. Occasionally present as well were the Innu and the Wendat, who came to exchange goods with one another.

It is said that it was at the request of the Innu chief Capitanal that the French came to establish a fort at the site known as Trois-Rivières to protect commerce.