Summoner's Rift
Summoner's Rift is an map where you can only play classic mode and its an 5v5 map.
I shall explain to you what that means.
Three lanes to fight your way to the enemy base. (that you need to destroy)
A jungle populated by neutral monsters of varying degrees of toughness, the toughest of which provide buffs and/or gold for your whole team.
Powerful turrets defend key areas on the map. You must confront these in addition to your enemies if you are to make headway toward victory.
A map dividing river that lies in neutral territory, allowing for quick travel between lanes.
Two bases at opposite corners of the map, populated by a shop, a nexus, two turrets to defend the nexus, and inhibitors that suppress the other team's minions.