The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

One of the world's steepest streets seems to have houses sliding down it.

If they push on just the right spot, even the weakest person can move this titanic boulder.

The world's tallest bridge is also possibly the most elegant.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

A red-brick beacon stands against the tempestuous Atlantic, on the windiest site in the United Kingdom.

A magnificent, iconic stone tower in the Scottish Highlands.