Knockvicar lies on the Arigna Scenic Drive off the N4 Dublin to Sligo road, near Lough Key Forest Park. It is where the actress Maureen O'Sullivan spent part of her youth. At Knockvicar bridge Donal Cam O'Sullivan Bere, the Irish Chieftain, after his defeat in Cork in 1603 travelled through the village of Knockvicar where his people rested for the last time before reaching O'Rourke's Castle at Leitrim village. In the late middle ages Knockvicar was the location of a Francisan house.
The Boyle River, which flows under Knockvicar bridge, connects with Lough Key via a weir and Clarendon lock gates 300m upstream. People can park near the bridge and walk along the towpath. Excavations at the Riversdale Estate of Mr. and Mrs. John Burke, were undertaken by Saint Louis University and the Institute of Technology-Sligo from 2005-2009. Three deviant burials were found there, leading to the conclusion that Irish people did believe in walking deads and vampires since the beginning of the middle ages. Úna Burke an internationally celebrated fashion designer from Knockvicar, was commissioned by singer Lady Gaga to make a selection of stage pieces.
Knockvicar is the current home of Colin Beggan and Frank Molloy, who in 2009 released a CD "Scars on the Mountain" under Roscommon County Council’s Artists in Residence and Public Art programme with the support of the Arts Council.