Any Doctor Who fan will know what a Dalek is and know what the iconic, blue TARDIS looks like. However, the uninitiated can look here:
http://www.thedoctorwhosite.co.uk/dalek/
http://www.thedoctorwhosite.co.uk/tardis/
Congratulations on the FTF to team adilts1257 and JAD55!
NOTE: The cache had to be replaced and moved several blocks away near a different Dalek after its hiding spot was removed/destroyed. This location isn't as close to the bridge and the black Dalek guarding it. However, there is a smaller,white,flying Dalek a bit further down the fence line. Crouch behind the "couch" and duckwalk through a tiny bit of vegetation to find the TARDIS.