Berlin wall
Pillars of Hercules
alentours
ambience
ambit
arena
back country
backwoods
bailiwick
bamboo curtain
beat
boondock
boondocks
border
border ground
borderlands
brush
bush country
bushveld
circle
circuit
circumambiencies
circumjacencies
circumstances
compass
context
demesne
department
domain
dominion
entourage
environing circumstances
environment
environs
field
forests
frontier
frontier post
gestalt
habitat
hemisphere
hinterland
iron curtain
judicial circuit
jurisdiction
march
marches
marchland
milieu
district
territorial dominion
territory
background
bourne
capital
cloudland
disputable
himself-a
lowland
marriage-bed
nullifier
pastoralism
starshine
succulence
tenantless
tiptoe
undetermined