Tayto Park has received approval for two new steel intertwining rollercoasters which will begin construction next year.
The new rollercoasters are due to open to the public in 2023.
Tayto Park is investing a total of €15m into the rollercoasters - its biggest single investment.
The new rollercoasters will create 40 new jobs at the theme park when they open.
To secure the planning, Tayto Park said it had spent over €1.5m on noise reduction methods, which included completely redesigning the coasters after the initial planning stages.
Designers were able to reorient the tracks to direct noise back into the park and away from housing in the area.
Tayto Park announced earlier this week that it will re-open on Monday June 29 after closing due to Covid-19 restrictions in March.
The founder of Tayto Park, Raymond Coyle, said today was a very exciting day for the park and Co Meath.
"We currently employ 420 people and not only will the new coasters add employment to the local economy, they are securing the future of the park," he added.