List of tallest structures – 400 to 500 metres

This is a part of the list of tallest structures in the world, past and present of any type.

In 1974, when the Warsaw radio tower was erected, it was the tallest structure ever built at 646.38 m (2,121 ft). It collapsed in 1991.

This list includes quite a few masts. A mast is a man-made support structure, commonly used on sailing ships as support for sails, or on land as radio masts and towers used to support telecommunication equipment such as radio antennas ("aerials" in the UK).

Other parts are:

• List of tallest structures in the world
• List of tallest structures in the world - 300 to 400 metres

See the first part for terminology and general introduction.