Swedish and Finnish colonists reached the Delaware River aboard the Kalmar Nyckel and Fogel Grip in March 1638. Under Peter Minuit, they purchased land from Lenape leaders and built a small earth-and-timber fort beside the Christina River, naming it for the young Queen Christina of Sweden. Fort Christina anchored New Sweden, a commercial colony intended to enter the profitable Atlantic fur trade and extend Swedish power. The settlement occupied Indigenous homelands already connected to Dutch, English, and Native trade networks.

The first fort was modest, but its location near navigable water made it the administrative and defensive center of the colony. New Sweden expanded along both sides of the Delaware, and settlers introduced forms of log construction that became influential in North America. Relations with the Lenape and Susquehannock were essential to trade and survival, though colonial land claims created lasting pressures. Governors strengthened or rebuilt Fort Christina as rival European powers competed for the river and as the settlement’s population slowly increased.

In 1655, Peter Stuyvesant led a Dutch expedition against New Sweden. Fort Christina surrendered after a siege, ending Swedish political control, although many Swedish and Finnish families remained. The region passed to English rule in 1664 and later became part of William Penn’s proprietary colony. Wilmington eventually grew around the Christina River, and industrial development altered the fort site. Earthworks disappeared, shorelines changed, and the exact form of successive colonial structures became a question for documentary and archaeological research.

Public commemoration gathered momentum during the nineteenth and twentieth centuries. The Delaware Society of Colonial Dames acquired part of the site, and Swedish-American organizations emphasized it as the landing place of the 1638 expedition. For the colony’s tercentenary in 1938, sculptor Carl Milles created the Swedish Tercentenary Monument, featuring the Kalmar Nyckel above a granite base. Franklin D. Roosevelt, Sweden’s Crown Prince Gustav Adolf, and other dignitaries participated in the anniversary observances, giving the place renewed international visibility.

Fort Christina became a National Historic Landmark and later a component of First State National Historical Park. The site preserves no complete seventeenth-century fort, so its meaning rests on landscape, archaeology, documentation, and commemoration. Interpretation should present the Swedish colonial venture alongside Lenape sovereignty, Dutch competition, later industrialization, and the making of ethnic memory. The surviving park and monument mark the beginning of permanent European settlement in the Delaware Valley while also showing how later generations selected, reshaped, and celebrated that beginning.