Calvert County - Scientists' Cliffs House & Garden Tour May 7, 2011 - What a great way to enjoy and learn about historically and architecturally significant properties. The Maryland House and Garden Pilgrimage (MHGP) sponsors the tour at Scientist's Cliffs, one of six house and garden tours for spring 2011. The Maryland House and Garden Pilgrimage is a non-profit organization that was formed in 1930 dedicated to the preservation and restoration of architecturally significant properties in the State of Maryland. This year's house and garden tour at Scientist's Cliffs is just one of many great things to do in Calvert County this spring. Scientist's Cliffs (Scientist's Cliffs available properties) was established in 1935 as a summer colony for scientists by Flippo and Annie Gravatt. The ar... 04/17/2011