Killing Baron Nashor gives you the following: a buff that lasts for 4 minutes that gives: 40 ability power 40 attack damage 3% of your maximum health in health regeneration per 5 sec.
1% of your maximum mana in mana regeneration per 5 sec.
it also gives 300 gold.
Compare that to a tower which only give 150 gold and i'd say getting nashors is worth it.
A baron kill alone doesn't necessarily turn a loss into a victory although it might help a lot.
Because you gain a huge advantage in the next teamfight usually allowing you to ace their team and push.
Or if that's not the case then you can usually push with your team and get 1 or more turrets tipping the game in your favor
gaming.stackexchange.com/users/19798/Serge Bekenkamp
Depends on What turret we are talking about.
Worth: T1 (First turret that can be broken)
T2
(Second turret that can be broken) Not worth: T3 (
Turret from base) Turret from Nexus
As @SergeBekenkamp said in his answer:
Killing Baron Nashor gives you the following: a buff that lasts for 4 minutes that gives: 40 ability power 40 attack damage 3% of your maximum health in health regeneration per 5 sec.
1% of your maximum mana in mana regeneration per 5 sec.
it also gives 300 gold.
The best moment to go for baron are: When all lanes are pushed.
After an ACE (if your team is good on health/survivability).
After a push when the opponents are dead or recalling.
All from above GOLD RULE: When you are SURE about they don't know you are going to do Baron.
(Wards are EXCELLENT tool for this.
sometimes the opponent is going jungle red/blue, defending bottom/mid lane and your team go there and do Baron quickly)
gaming.stackexchange.com/users/12936/Michel
I would say 1 of you make sure that all lanes are pushed while other doing baron , and if you're doing baron after winning a team fight that would be a lot easier
gaming.stackexchange.com/users/22207/MastaMoMo
One tower generates you 150 gold for each member of your team whereas baron gives you 300 gold to every member of your team plus 900 exp points and a buff that makes you stronger
so i would say it makes up for the tower...
gaming.stackexchange.com/users/22199/Duje Zubcic
Killing Baron is definately worth taking over loosing a turret, because in the late game...turrets are pretty worthless.
I just view them as a tanky level 20 champion with no items.
So by taking Baron your team would get twice the the gold than the other team just taking a turret AND you would have a buff advantage (which you would use to push them or force a teamfight) 75% of the time getting Baron is a game ender.
gaming.stackexchange.com/users/22305/Trevor Patch
In my opinion, it is.
Baron gives 300(iirc) gold if you kill it to each person, pseudo-blue to your team, and 40 ad/ap, and massive hp regen (there may be other stats on it
but I forget it).
The tower gives 150 gold per person and no buff.
300+many buffs is better then 150 and no buffs in most cases, however, if your team can't kill baron fast you're giving them a large chance to push and baron will deal a lot of damage to your team, allowing an ace opportunity
so in that case, protecting the tower is better.
TL;DR:
Baron is better if you can kill it fast, if not, save the tower.
gaming.stackexchange.com/users/22095/Nobody
I've noticed that every time me and my team go for baron we lose a turret. Is the boost from baron really worth losing a turret? Doesn't baron just give health and mana regen? Can a baron kill alone bring a sure lose to a victory or is pushing more important?
Is killing Baron worth losing a turret?
gaming.stackexchange.com
<league-of-legends>
gaming.stackexchange.com/questions/58436
gaming.stackexchange.com/users/22233/conjim
Killing Baron is definitely worth losing a turret as they are pretty worthless in the late game. Getting nashors is worth it, compared to a tower which only gives 150 gold.  It is widely accepted as a fact that it is worth to trade a tower for a baron.
It is a belief that baron is more beneficial for the team, than a tower.