This cache is hidden near a tower built when Montenegro was under the Ottoman Empire.
The cache itself is a nano. Disclaimer: Bring a toothpick to get the logbook out.
Your task starts here: N 42° 26.140 E 019° 15.608 (side of the tower facing the door). There is a hole on the side you're facing. Where is the hole? a) Above the door=3; b) Next to the door (left side)=4; c) Next to the door (right side)=5. If it isn't obvious, the number next to the correct answer=A
For the next answers you'll need to do a bit of research.
As mentioned, this tower was built by the Ottomans, but when was it opened? The LAST TWO digits of the year when the tower was opened=BC
What is the height of the tower? The height of the tower in meters=DE
Check your answers: A+B+C+D+E=23
Final coordinates: N 42° (A-D)B.D(A*A)(B-D) E 019° D(E-D).E(B-D)A