Question on Che's Imprisonment in Mexico

[blackcatCA]

I'm going to Mexico City next year, and so I thought I'd check out the prison where Che and Fidel were held back in 1955, Miguel Schultz Prison. The only problem is, I've scoured the internet and the only references to this place that I can find are in relation to Che and Fidel....does anyone know if this place still exists, and if so, where it is located?

Thanks in advance....