For example, Eevee evolves into Glaceon when near the icy rock in Twist Mountain and into Leafeon near the mossy rock in Pinwheel Forest. And I just saw in another question Magneton evolves in Chargestone Cave.
Are there any others?
Trade with Prism Scale
Level up by Moss Rock in Pinwheel Forest to get Leafeon
Level up by Icy Rock in Twist Mountain Basement to get Glaceon
Lv up in Chargestone cave for Magnezone/Probopass
Hope this helps...