Protests are set to continue in Co Kildare amid plans to change access to areas of Castletown House.
Locals say plans to move a rear car park to the front of the estate will affect access to the house and traffic in the town of Celbridge.
The Office of Public Works (OPW), which took over the estate in the 1990s, tried to buy the private lands but were outbid.
There was an agreement with the previous owner, on a five-year rolling basis, which gave access to the car park.
The OPW attempted to agree a lease with the new owner, but there were conditions attached to any new lease which would only run up to next May.
Lunchtime Live caller Jean said they were given very short notice to the changes.
"The area that's going to be cut off is the whole back entrance, which is from the M4 exit," she said.
"There's a massive car park at the back, which allows people to come from all directions in, without disrupting the traffic at the village.
"That's all going to be closed from Friday evening.
"We got very short notice; we just heard on Friday evening gone that the Office of Public Works were going to now be forced to close that car park.
"They're looking to build a car park at the front meadow instead, at the village end."
Jean said locals will still have access to the area, but there are other issues.
"For anybody with any mobility issues they're not going to be able to park a car," she said.
"For people who are actually coming in from other areas - like Leixlip or Maynooth or any of the local towns... they're going to run into terrible problems with traffic down here in the village.
"Already our infrastructure for traffic in and out of Celbridge is a disaster; so it's just going to be a no-go for a lot of people from here in."
'Wider historical importance'
Social Democrats TD Catherine Murphy said the OPW has pumped millions into the estate.
"Castletown House is of international importance," she said.
"Since they acquired the house in the late '90s from Desmond Guinness... [the OPW] have assembled 235 acres.
"Since 2007 they've spent €25 million on this house.
"It's not just an attraction for the locals; this house has significance for a much wider catchment - people come from all over the country.
"Essentially it has a much wider historical importance, and it is a big tourist attraction and the OPW has been developing it as such.
"The OPW told us yesterday they're going to have to curtail the activities at Castletown House in the absence of having adequate car parking."
Deputy Murphy said while a Compulsory Purchase Order is an option open to the OPW, "they did say to us yesterday [that] if it goes to that, they would prefer the council to seek that on their behalf".
'A nature reserve'
Local resident Ross told the show he believes the entire area should be protected.
"The 500 acres surrounding it are about 600-years-old," he said.
"There's ancient woodland here, there's EU listed meadows, the River Liffey runs through it and there's a variety of rare flora and fauna.
"The entire 500 acres should be recognised as a nature reserve," he added.