On the terrace area of CA2M (Centro de Arte 2 de Mayo)
Avenida Constitución, 23 to 25,
Móstoles (Madrid)
To go:
Renfe: Móstoles C5
Metrosur: Móstoles Center Pradillo
Bus: L1, L2, 519, 520, 521, 525, 526, 527

I think to return later, there are buses every hour to Príncipe Pio