Do you have any kind of network connectivity between your house and barn?
Security Camera NVRs (network video recorders) usually provide the connection & power to ** amount of cameras. They can be monitored from computers using a web browser to connect right to the IP Address of the NVR, an most manufacturers usually have apps for smartphones and tablets for monitoring.
Example of an NVR with 16 camera ports.
http://www.hikvision.com/us/Products_1_10649_i8726.html
You would then connect the NVR to your home network to be able to monitor it.
Without a link between the house and barn, you will not be able to view/monitor it in the house. CAT5e/6 are good for connections up to 100 meters. As mentioned earlier, there are direct burial versions of each. If the house is further, then you'd have to look into linking them with point to point wireless.
Something like this on each side
https://www.ubnt.com/airmax/nanobeamm/