The Ark

The Ark allows your followers to go and inhabit WeyWorld. It will be first found as ruins at the left of the Homeworld's Astariville. It can be fixed to go to Weyworld.

Details
Prior to the source (source: http://www.22cans.com/coming-soon-a-brand-new-land/):

Repairing
The repair of this ark is not only expensive but also takes a long time to build.

As said above, it takes, , and 1 week to repair, however, the build time can be drastically reduced by the builders able to repair at once.

A great trick to unlocking the ark is to assign only builders to it and wait for it's completion. Once the ark's construction has been finished, you will be prompted to either sail to Weyworld with the current number of followers who helped build the ark, or leash some more followers towards it until you reach the max capacity of 300.

Assigning more than builders will not reduce the required build time any further.

If you are stuck on 299 workers. The reason for this is one of your workers has got stuck/lost on you island somewhere. Click on your Ark then search around for a stuck builder with a blue arrow. You could shape the land to free them ... or ...death works too. Then, just send another worker to the ark.

Voyaging
The ark itself can hold up to 300 followers, to journey to other lands. As of the time the ark is released, it can only sail to Weyworld.