A huge, protected Second World fortress right in the middle of Central London, sat in between Horse Guards Parade and Saint James's Park.

Aldwych Station, originally know as Strand Station was closed in 1994. The disused street level entrance can still be seen on The Strand.

A Second World War ammo dump, the valley was originally the entrance to Browns Folly Mine which was collapsed by the War Department.

One of the UK's biggest and most secret bunkers was hidden in the small Scottish town of Anstruther, near Troywood in Fife. Like Kelvedon Hatch, was...

A fairly small, single adit entrance Bath stone quarry, it's now used as a mushroom farm, it all spent some time as a Royal Naval storage depot.

A surviving WW2 underground bunker situated behind The Print House, the industrial space features 5 separate cavernous rooms. Untouched for over 60...

Box Quarry is an SSSI (Special Site of Scientific Interest) because of its national importance for hibernating and roosting bats. The bats must not...

A two mile long tunnel, built by Isambard Kingdom Brunel through Box Hill. Next to the eastern entrance of the tunnel you can see the remains of a a...