Is joyrides.com shut down?

Is the joyrides.com site shut down?

I am a teacher who was going to do a lesson with my class on roller coasters, but the site I was instructed to access won't load.

I want the students to compare height, length, speed, etc. of roller coasters by estimation. This lesson was found at
http://illuminations.nctm.org/index_d.aspx?id=241

I need them to only look at pictures to begin with. THEN they will need the actual facts about the coasters. The facts and pictures can’t be mixed as this will defeat the purpose of the estimation activity.

Can you open joyrides.com?

Thanks,
Teacher05