In August 2023, I visited Cooper-Frost-Austin House, the oldest extant building in Cambridge, now owned by Historic New England (HNE). Built in 1681, members of the same family lived in the house for its entire life as a regular residence. Cooper-Frost-Austin House is open only a few days a year. Tickets are standard HNE small house pricing at $10 for standard guests and $0 for HNE members (like me!). Metered parking is available on Massachusetts Avenue. I had previously parked at the MBTA parking garage, walked two miles to Longfellow House Washington’s Headquarters National Historic Site, then walked another mile to Cooper-Frost-Austin House, which was a great time for me, but certainly not for most people. Like most historic house museums, the property is not accessible to those using wheelchairs. Stairs are steep, and the attic ceiling is low. Lighting was minimal, especially during a cloudy day. No virtual tour is currently available. This is a fascinating property for people obsessed with early American architecture, but likely is not the right experience for other visitors.