Dogs are allowed at Weir Farm National Historic Site, as long as they remain leashed. As per 36 CFR 2.15 (a)(2)
Please Note: Dogs are not allowed in the , the 110-acre network of hiking trails directly adjacent to the property. Dogs are not allowed in the Nod Hill Refuge or State of Connecticut lands that border the Weir Pond. You may stop by the Burlingham House Visitor Center to pick up maps of both Weir Farm National Historic Site and the Weir Preserve, and a park ranger will indicate where dogs are allowed.
Horseback riding is not allowed at Weir Farm National Historic Site.