According to the Sims Wiki, Festival Grounds typically replace the largest park lot in the world if the Seasons EP is installed. Through the use of a seasonal lot marker the park amenities change to make them seasonally appropriate no matter the time of year.
See also: Big Park, Small Park.
World: Appaloosa Plains
Name: The Lexington Grounds
Size: 50 x 50
Cost: N/A
World: Aurora Skies
Name: Aurora Skies Festival Lot
Size: 64 x 32
Cost: $41,086
Note: This is a replacement for the Groomed Grounds Big Park lot created by SimGuruSmitty for use with the Seasons EP. Find it on the Sims 3 Exchange at:http://www.thesims3.com/assetDetail.html?assetId=7022551
World: Aurora Skies
Name: Groomed Grounds
Size: 64 x 32
Cost: $41,086
Note: If the Seasons EP is installed this is the default Festival Ground lot.
World: Barnacle Bay
Name: Crowe's Nest Campgrounds
Size: 64 x 64
Cost: N/A
World: Bridgeport
Name: Bridgeport Acres
Size: 64 x 64
Cost: N/A
World: Hidden Springs
Name: Beryl Forest Festival & Campgrounds
Size: 50 x 40
Cost: N/A
World: Isla Paradiso
Name: Plaza Park
Size: 64 x 44
Cost: N/A
World: Lucky Palms
Name: Civic Center Park
Size: 64 x 64
Cost: N/A
World: Lunar Lakes
Name: Memories of Seasonal Festival
Size: 52 x 52
Cost: N/A
World: Moonlight Falls
Name: Eerie Park
Size: 50 x 50
Cost: N/A
World: Starlight Shores
Name: Verde Park Festival Grounds
Size: 64 x 64
Cost: N/A
World: Sunlit Tides
Name: Sunlit Tides Festival Grounds
Size: 50 x 50
Cost: N/A
World: Sunset Valley
Name: Central Park
Size: 64 x 64
Cost: N/A
World: Twinbrook
Name: Town Center
Size: 64 x 64
Cost: N/A
Which is your favorite Festival Grounds?
