The memorial will open to the public on Monday, and features two pools, set in the locations of the towers.

And it's true that from a distance on a humid morning, this 28-year-old pool, set amid the greenness of the park, seems unreal.

Codale Tarn is a shallow pool set amid rough ground, a little to the north east.

The coypus enjoyed a small pool set in the stone slabs of a ground floor room.

He faced a deep pool set about with granite and shale, its waters darkened by the juices of rotting leaves.

Illuminated pools set in the floor of the wood-paneled room provide bubbling sound effects.

The arched doorway looked out on a wide blue pool set in the middle of stone cloisters.

There are some good features in the landscape, especially the pools set into the stone.

And an attractive wall of architectural bricks lightens the 50-foot pool, set in a room that feels like the tropics.

Behind the hotel is a small pool set in gardens.