1842 construction of El Pueblo as an independent trading post.
1848 Business at the fort declines as a result of the Mexican–American War. The Treaty of Guadalupe Hidalgo, the peace treaty ending the war alters the trade dynamics of the region and the simultaneous discovery of gold in California causes the forts population to dwindle.
1854 Ute and Jicarilla Apache natives led by Chief Tierra Blanco lead a successful attack on the fort, killing 15 men, and capturing one woman, and two boys. The fort was abandoned following the attack.
1858 Pike's Peak Gold Rush brings people to the area who will plat Pueblo and Fountain City near the confluence of the Arkansas and Fountain.
1860 Pueblo platted taking name from the old trading post. It is replatted in 1870 following its organization. Settlers used some of El Pueblo's adobe bricks to build their own structures and gradually built over the fort, by the 1880s it had disappeared under the new city.
1888 Farriss Hotel is built on the site where El Pueblo once stood.
1959 The Colorado Historical Society open the El Pueblo History Museum, which included a full-scale replica of El Pueblo, at the converted old Pueblo Municipal Airport hangar.
1980s The begins program to locate El Pueblo. They settle on a possible location under the Fariss Hotel.
1989 USC Anthropology professor William G. Buckles initiates a survey of the Fariss Hotel's basement.
1991 The city tears down the Fariss Hotel allowing for more extensive archaeological excavations. Signs of El Pueblo's structure are discovered.
1992 El Pueblo History Museum relocates to a building on the same block as the excavation.
1996 The rediscovered El Pueblo fort is listed on the National Register of Historic Places.
2003 The new El Pueblo Museum complex is completed. It includes the El Pueblo History Museum, the William G. Buckles Archaeology Pavilion over the excavation site and a reconstruction that resembles the original trading post.
Exhibits
Seeing Red examines the history of redlining in Pueblo.
Borderlands of Southern Colorado examines the areas border history. A portion of what is now the city of Pueblo was part of the Louisiana Purchase another section of the city was part of Old Mexico and later claimed by the Republic of Texas.
When Pueblo City Schools switched to four-and-a-half school days and then to four days, "Hands on History" was organized by the museum to help working parents give their children a place to go on Friday afternoons after school was out. The program then expanded to a full day on Fridays and also now has a summer program. The successful program has expanded to other Colorado cities as well, including Trinidad, Fort Garland, Platteville and Montrose.