The building on Aleje Racławickie 23 is currenlty hosting the military hospital, but it was constructed before WW2 as catholic college, callled Collegium Bobolanum.
In September 1939, the building as a theatre of fierce fighing between Polish army and Gernam Wehrmacht during the defence of Lublin. You can enter the building, if you want to feel the atmosphere in which the soldiers were fighting (however entering the building is not neccesary to get the final container).
The cache is a simple multi. At first stage, you'll find yourself in front of entrance to the hospital. There's a commemorative plaque on the wall, dedicated to Polish soldiers defending the hospital in 1939. What was the number of that hospital? Write it down as ABC.
The cache is placed at:
N 51° 15.BCA E 022° 32.CCA
Bring your own pen!