2900 State St.
In the early 1920s, Oscar and Mattie Killian built the Killian commercial building on State Street. Some of Carlsbad’s earliest commercial ventures – a grocery store, a doctor’s office, and the town newspaper – were located here. The building was destroyed by a fire in 1927 and then rebuilt in 1929. Today the building retains its integrity as one of the first large-scale commercial buildings in the city.