Here are two of my favorite places to visit in summer:
The Isabella Stewart Gardner Museum’s Courtyard is a cooling vision in blue and white all month. Hydrangeas are especially impressive. If you can’t get enough of blue hydrangeas, be they mophead or lacecap, this is the spot for you.
https://www.gardnermuseum.org/experience/courtyard/summer-blues
Advanced ticketing required
A historic garden built to showcase blue flowers was restored in Newport, 2012-14. You can visit this Frederick Law Olmsted, Jr. designed garden on Thursdays in summer by pre-paid reservation. Included is a guided tour by Sarah Vance, Landscape Architect and Curator. Slip into another world and make a visit now!