one way to get in out of like 5 is near hearthome tward the west. that is the way you want to go to get to spear pillar. you can also get in near celestic town, and a few other places.
PS to get to spear pillar you will need HMS' surf, rock climb, and rock smash.
Dialga isn't acually in a city. It is in Mt. Cortet. Fist you have to beat team galactic leader and then free the three Pokemon they were holding. After that you go into the Mt. Cortet entrance near Hearthome city.
Chopain's 21st cortet symphony
my personal favorite was the "grape drank cortet" and their smash hit "pass the fried chicken and watermelon"
Mt. Fuji, Mt. Naka, Mt. Tokachi, Mt. Okuhotaka, Mt. Hidaka, Mt. Chugoku, The Japanese Alps, and someone can add on to this. :D
China (9,300 Mt) The United States (4,800 Mt) India (2,200 Mt) Russia (1,500 Mt) Japan (1,100 Mt) Germany (718.8 Mt) Korea (600 Mt) Iran (567.1 Mt) Canada (547.8 Mt) Saudi Arabia (532.2 Mt)
4500 mt = 4500000 kg4500 mt = 4500000 kg4500 mt = 4500000 kg4500 mt = 4500000 kg4500 mt = 4500000 kg4500 mt = 4500000 kg
mt. haungshan,mt jiuhua,mt waitai, mt emei and mt putuoshan by zainith Patel mellor
1 mt = 1000000 g1 mt = 1000000 g1 mt = 1000000 g1 mt = 1000000 g1 mt = 1000000 g1 mt = 1000000 g
mt renier mt zion mt Hillary mt cooper
0.9 mt = 900 kg0.9 mt = 900 kg0.9 mt = 900 kg0.9 mt = 900 kg0.9 mt = 900 kg0.9 mt = 900 kg
1 mt = 1000 kg1 mt = 1000 kg1 mt = 1000 kg1 mt = 1000 kg1 mt = 1000 kg1 mt = 1000 kg
3.24 mt = 7142.977 lb3.24 mt = 7142.977 lb3.24 mt = 7142.977 lb3.24 mt = 7142.977 lb3.24 mt = 7142.977 lb3.24 mt = 7142.977 lb