Seven employees suffered from smoke inhalation after a fire broke out inside a Disneyland parking structure in Southern California Monday afternoon.

Eight cars caught fire around 4:30 p.m. inside the Mickey and Friends parking structure on Disneyland Drive, according to the Anaheim Fire Department.

The fire, which was on the second level of the structure, was extinguished in less than 30 minutes.

Although the cause of the fire is under investigation, the Anaheim Police Department said that no foul play is suspected.

Four cars were completely destroyed and four others were damaged from the fire's radiant heat. Initial damage was estimated at $180,000, police said.

Sgt. Daron Wyatt said "it's kinda miraculous" that more vehicles weren't damaged. "This is a parking structure that holds over 10,000 cars," he said.

Four of the seven people who suffered from smoke inhalation were taken to the hospital with non-life threatening injuries.

Aerial footage from NewsChopper 4 showed black smoke billowing into the air.

The parking structure was closed and evacuated while the smoke cleared from the structure, fire officials said. Visitors could not get to their cars for about three hours. The Disneyland parks remained open and unaffected.

Guests entering the parks Monday evening were asked to use the Toy Story parking lot at the corner of Harbor Boulevard and Convention Way.

All floors of the parking structure reopened for guests and employees around 8:30 p.m.

AFR on car fire with multiple vehicles at Mickey & Friends structure. No injuries. Structure evacuated. @AnaheimFire pic.twitter.com/tLSD8g1qgZ — Anaheim PD (@AnaheimPD) February 14, 2017

NBC4's Beverly White contributed to this report.