From the website:
Olana State Historic Site5720 Route 9GHudson, NY 12534 Tours Friday-Sunday, 11 00am-3 30pm Entrance to the Main House is by tour only. The landscape is free and open to the public. Park open daily 8 00AM-Sunset Estimated Drive Times Albany 45 minutesBoston 3 hoursNew York City 2.5 hoursPoughkeepsie 1 hourSpringfield, MA 1.5 hours By Car New York City and...