The 7 wonders of Equestria

It starts as an average morning in Ponyville. Everypony is happy, the CMC are trying some usual stunts and Twilight is with her friends re arranging the library for the second time this week. (That's actually an improvement.)

"Alright Girls," Twilight began "Today i have came up with a new strategy!" Twilight started by unrolling a long scroll that she had created over night. Placed on that scroll was, yes, a 'Library Sorting Checklist.' "here," She continued "is the way we shall sort everything. This method should get the library sorted by lunch at the latest." An uncalled for groan came from the group.

"Ugh..." The groan came from none other than Rainbow Dash. "Usually i'm fine with sorting the library with you Twi, but don't you think sorting it every day this week is a little....extreme?" Did i mention it was only Tuesday?

"The only reason we are sorting it again today is because SOMEPONY decided to take a nap yesterday, leaving us to do the rest. The time cut back really made a difference." Twilight shot back.

"Alright ya'll, calm down." Applejack interrupted. "I'm sure with a little music and help it will fly by." Just then some small hoof steps entered the room. Standing there was Apple Bloom, Sweetie Belle and Scootaloo. "And here they are now!"

The fillies took a short glance at what they were facing before chiming in with "CUTIE MARK CRUSADERS BOOK SORTERS!" As usual, they began working instantly with no hesitation.

After working for what seemed like  an hour, everypony decided that it was time for a break. Pinkie pie un boxed some sapphire cupcakes, Applejack put on some calming country tunes, Rarity crafted nine comfortable looking chairs with her magic, Fluttershy groomed angel,  Rainbow Dash decided to read 'Daring Do and the Sapphire Stone' for the tenth time, Twilight decided to study a new form of magic and of course the fillies carried on working despite being on break. You could occasionally hear small mumbles like 'What would a book sorting cutie mark look like?' and 'Can you pass me the checklist' to make sure they were working up to a high standard. The fillies soon came to a point where they couldn't reach and where Sweetie Belle's magic simply wasn't strong enough. With that, the work continued.

Another hour passed and the library was almost complete. The cupcakes were almost gone and everypony was exhausted. Now there were only five shelves left. Twilight soon came across a section which she had never noticed before. The book she pulled out first was named 'Castle maintenance for fillies' and another read 'What to do if your castle disappeared.' She kept searching through the old books until a certain title caught her eye.

She wiped away the dust carefully, not wanting to damage the old pages. "The 7 Wonders of Equestria.....?" She questioned. By now, the others were surrounding her.

"Well?  aren't cha gonna open it?" AJ said  whilst staring at the title. With that, Twilight cautiously opened the cover. A bright  light shone across the faces of the curious ponies and a note appeared along with a key. Once the light dimmed, Twilight began to read the note.

"Dear Princess Celestia, Enclosed are'the Seven wonders of Equestria' that you requested. The powers contained in  each book tell the fate of this magical land. The collection starts with 'The formation of the purple alicorn' and that is where your adventure starts. Good luck on your journey.

Star swirl The Bearded."

Twilight's eyes widened as she stared in disbelief.