Virtually unchanged since 1954, when the last member of the family that owned it died, the 1859 Gibson House is never the same twice—you always notice something new. That’s because the lovely brownstone holds so much stuff, from paintings and sculpture to an ornate high chair to a straw boater hat. The tour covers both the family chambers and the rooms where the servants toiled—think “Downton Abbey” with different accents. Check ahead for the schedule of lectures and other special events.