Yes, the same as in sapphire/ruby,the battle tower is a secret place where you can battle people at ether lv. 50 or lv. 100 [that will be the level of their pokemon not yours].You should able to access it once you beat the Elite Four.
You can get joyous tower. It has 99 floors and start at level 1. What is the question you are asking?
If you get the Friend Area Rainbow Peak, you'll be able to recruit Ho-Oh.
you get it autonatically when you recruit Ho-Oh
Ho-oh.
moltres is at mt blaze peak and you have to beat rayquaza first but there is a 50 per cent chance of getting moltres on your rescue team OMG THANK YOU SOOOOO MUCH!! i have been waiting for AGES for this moment!! i already got zapdos, i kow where articuno is and i sooo needed moltres!! THANK YOU! lol
don't know because haven't got there yet
Mt. Coronet (middle) peak
you get it autonatically when you recruit Ho-Oh
Ho-oh.
Rainbow Peak.
Yes it is Rainbow Peak You can buy it from Wigglytuff in Pokemon Square for 6500 Poke.
Rainbow Peak
This dungeon have 40 stairs. You have to battle someone on the summit. You battle Ho-oh the mirage pokemon. If you have his friend area, Rainbow peak he will ask you if he could join your team.
Zapdos can be found on Mt. Thunder, Peak (3F).
On Mt Faraway Peak B3f he is Lv50
Mt thunder peak,where else!!jeez
do rescue mission(like 10 of them) and one day you go to the Pokemon square and the Pokemon said OH NO team BLA BLA BLA BLA has not return. then you have to get them...but beware you have to fight groundon and he is on the 5 peak(after going about 30 f) he is hard...-cance of joining your rescue team -10%
Zapdos is in Mt. Thunder Peak. Moltres is in Mt. Blaze Peak. Articuno is in Frosty Grotto. To meet them again and recruit them, pass Mt. Thunder, Mt. Blaze, and Mt. Freeze without doing any rescue missions.
You need to buy the Friend Area "Rainbow Peak" to make Ho-oh join your rescue team. I recommend that you use the Friend Bow (Here is a WonderMail code: ??7? ??(...)? 4??? +F?? F4?6 K??? It's in Tiny Woods on Floor 1. A Bulbasaur will give it to you if you rescue it.) to receive it. Ho-oh is on Level 50, so bring a few Reviver Seeds so you won't faint. Rainbow Peak can only fit Ho-oh, so it will be the only Pokemon in the area. The Friend Bow will make the recruit rate of Ho-oh be greater by 10%. Ho-oh will probably join your team because the recruit rate will be above 100%. But you can't recruit Ho-oh until you've beaten it at least once.