Un-fulfilled prophecies:

D&C 57:1-3
http://scriptures.rosenvall.com/en/dc/57

1?3, Independence, Missouri, is the place for the City of Zion and the temple; 4?7, The saints are to purchase lands and receive inheritances in that area; 8?16, Sidney Gilbert is to establish a store, W. W. Phelps is to be a printer, and Oliver Cowdery is to edit material for publication. 
  1 HEARKEN, O ye elders of my church, saith the Lord your God, who have assembled yourselves together, according to my commandments, in this land, which is the land of Missouri, which is the land which I have appointed and consecrated for the gathering of the saints. 
  2 Wherefore, this is the land of promise, and the place for the city of Zion. 
  3 And thus saith the Lord your God, if you will receive wisdom here is wisdom. Behold, the place which is now called Independence is the center place; and a spot for the temple is lying westward, upon a lot which is not far from the courthouse.



http://journalofdiscourses.org/Vol_09/refJDvol9-14.html
Discourse delivered by Elder GEORGE A. SMITH, in the Tabernacle,
Great Salt Lake City, March 10, 1861.


And let me remind you that it is predicted that this generation shall not pass away till a temple shall be built, and the glory of the Lord rest upon it, according to the promises.


Has a temple ever been built in Independence, Missouri?

http://en.wikipedia.org/wiki/Temple_Lot
Attempts to build a Temple:

Two events kept the temple from being built: the church divided over the issue of rebaptism, and the Great Depression occurred. The excavation remained for many years, but was eventually filled in and replaced with a grassy field.


The Holy Bible tells us about un-fulfilled prophecies:
Deuteronomy
18:20 
 But the prophet, which shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die. 
 
18:21 
 And if thou say in thine heart, How shall we know the word which the LORD hath not spoken? 
 
18:22 
 When a prophet speaketh in the name of the LORD, if the thing follow not, nor come to pass, that is the thing which the LORD hath not spoken, but the prophet hath spoken it presumptuously: thou shalt not be afraid of him.