Six of the cars were owned by the museum and two — a 1993 ZR-1 Spyder and a 2009 ZR1 Blue Devil — were on loan from General Motors, said museum spokeswoman Katie Frassinelli.
The other cars damaged were a 1962 black Corvette, a 1984 PPG Pace Car, a 1992 White 1 Millionth Corvette, a 1993 Ruby Red 40th Anniversary Corvette, a 2001 Mallett Hammer Z06 Corvette and a 2009 white 1.5 Millionth Corvette.
"All of these have a unique story behind them," said museum executive director Wendell Strode. "They're special."
An Indiana man donated the 1962 Corvette before his death. He babied it so much he wouldn't drive it in the rain.
"It was just a very immaculate car," Strode said.
The museum has insurance coverage for the damage to the cars and the structure, he said.
The hole opened up at about 5:40 a.m. CST Wednesday, setting off an alarm and a call to the fire department, said Bowling Green city spokeswoman Kim Lancaster.
No injuries were reported. Frassinelli said no one was in the museum at the time.
The museum attracts about 150,000 visitors each year. It's located near the factory where the iconic Corvettes are made.
The hole opened beneath part of the museum's domed section, an original part of the facility that was completed in 1994. The area will remain closed. The fire department estimated the hole is about 40 feet across and 25 to 30 feet deep. The rest of the museum will operate normal hours Thursday, officials said.
The museum said a structural engineering firm determined the perimeter of the domed area is stable.
Pictures of the sinkhole showed a collapsed section of floor with multiple cars visible inside the hole. A few feet away, other Corvettes sat undamaged. Most of the vehicles were later removed from the damaged area, and the museum was contacting their owners.
"It's certainly a sad day here," Strode said.
Visitors trickled into the museum Wednesday, some unaware the main exhibit area was closed. They gazed at the Corvettes on display in the main lobby and shook their heads in amazement that prized Corvettes had been swallowed by the earth.
"That's a whole lot of money just to throw down a hole," said Alida Kriete, who stopped with her family on their way back home in Indiana after a vacation to the Gulf Coast.