A longhouse is a large, rectangular building where many families from the same community or clan live together under one roof. Picture a structure that might stretch 200 feet long (about as long as 15 cars parked end to end) but only 20 feet wide, with a central corridor running down the middle and family spaces along both sides.

The Haudenosaunee (Iroquois) people of northeastern North America built famous longhouses from wooden poles covered with bark. Each family had its own section with a fire pit, but they shared the building with relatives from their mother's family line. When a couple married, the husband moved into his wife's family longhouse. Some longhouses held 20 families or more, with smoke from their cooking fires rising through holes in the roof.

Many other cultures built longhouses too. Viking longhouses in Scandinavia served as homes, workshops, and even barns under one roof. In Southeast Asia, groups like the Dayak people of Borneo still build longhouses today, with dozens of families living together in structures raised on tall stilts.

The longhouse design reflected a way of life where extended families worked together, shared resources, and made decisions as a group. Living in a longhouse meant you were rarely alone: your aunts, uncles, cousins, and grandparents were always just a few steps away.