It's an ingenious system and our initial impression was that it worked well.

For this ingenious system to work properly, the fish tanks and sluice gates had to be built at the correct level relative to high tide at that time.

Its thick walls and complex entrance remove you from the raucous world of the street; an ingenious system of air circulation keeps the building cool and fresh.

Though the upper sashes of the windows are out of reach they can be raised and lowered by an ingenious system of cords and pulleys, all in perfect working order.

However, its ingenious system of chambers and paddles can befuddle inexperienced boaters and leave them with a sinking feeling.