These buildings were replaced by two 13-storey concrete tower blocks in the 1960s.

A high wall runs around his property, and guards stand watch in little concrete towers.

Built in 1966, it is a 157 metre tall concrete tower.

Instead of the typical concrete tower, traditional island architecture was used in individual houses.

The new light was automated on the top of a concrete tower.

The entrance to a building along is followed by a concrete tower.

In 1967 the light was moved from the house to the a new concrete tower which still stands today.

The concrete tower fell into its own basement, leaning to one side but still standing.

The two remaining concrete towers are owned by the military.

It is one of the thinnest steel and concrete towers in the world.