First, a Philadelphia couple knows that their early 20th-century house was built by a once-famous architect, but when they discover a box full of the architect's mementos in the attic, they learn more than they ever planned about their house and local history. Next, a young Chicago family restores an 1890s two-flat and discovers its link to several generations of Chicago's immigrant culture, including a local doctor. Then, an unusual story develops when a Seattle couple is featured. They have built a very modern house on the history and actual foundation of a popular former flower shop. They uncover relics from the flower shop and learn what its role in their neighborhood was.