The Wellington Carnegie Library at 121 W. Seventh Street is a handsome Neoclassical building dating to around 1916. It's one of the many libraries funded by industrialist Andrew Carnegie's philanthropy program, and this one has held up better than most — the exterior stonework and original proportions are largely intact.
The building no longer serves as the city's main library (that function moved to a newer facility), but the structure remains a local landmark and an attractive piece of early-20th-century civic architecture. Worth a look if you're walking the downtown historic district — it's just a block west of Washington Avenue.