Kim Kardashian showed how special Kendall Jenner's surprise birthday outing was by sharing Keek videos from their day trip.

The mother-of-one shared two clips, including a tour of the near empty theme park her family rented for the day.

Kendall's family surprised her by renting out Six Flags Magic Mountain in Valencia, Calif. on Tuesday in celebration of her upcoming birthday. She will turn 18 on Nov. 3.

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In Kim's first video, she discussed how lucky they were to have access to rides without waiting on lines.

"We're here for Kendall's birthday party and we rented out Magic Mountain," Kardashian says in the clip. "No one else is in the entire theme park but us and the people there to greet us."

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The newly engaged reality star said the downside of having the park to themselves was that there weren't enough employees around that day to satisfy their food cravings. On the plus side, the family rode around in mini-carts instead of walking around the massive theme park.

"But look, no one's even working in the concession stands," she laments. "And we get to drive instead of walk. This is real lazy, but this is what Kendall wanted and it is a nice surprise for her and I'm excited for her. So happy birthday Kendall."

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In the second video, she took her fans along on her roller coaster ride. She is seen sitting next to her new BFF, video model and dancer Blac Chyna.

"I hope this isn't too scary," she says in the short clip before the ride nosedives, adding, "we better not drop our phone!"

The video ends with Kardashian and Chyna screaming hysterically.

A new episode of Keeping Up With the Kardashians will premiere this Sunday, Nov. 3 at 9 p.m., on E!.

Watch Kim's first video tour of Magic Mountain:

Watch the next two videos of Kim and Blac Chyna during their roller coaster ride at Magic Mountain: