This is a revision on my original dice tower (http://www.thingiverse.com/thing:1762997)
I added the gate per a request. I made it sliding optional for ease of printing. If it won't slide easily, the secret door should still work. I already made the original so I don't know if I'll get around to printing this version.
UPDATE: 1/4/17 - I just got around to checking this out for printing and noticed I messed up the tower interior. So I have corrected it and added a version that supports the arches.
UPDATE: 1/8/17 - I got it all printed and mostly sanded down and put together. The gate needs a filler panel to prevent it from getting stuck up inside the walls with nothing to grab and pull it back down with. I'll try and post a make today, but it'll probably be next weekend before I can get it painted. I've add a gatefiller file with both 15mm and 20mm tall plates to glue in over the gate. I think I'll end up with the 15, but some people may want the extra grip on the gate to pull it back down.
Pu1p made a flagpole for the secret door switch. Check it out: http://www.thingiverse.com/thing:2043609