Towers

This 165-foot water tower has been supplying the residents of Varel with drinking water for more than a century.

This stone tower was built in the late 19th century to signal the time to ships in the water.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

Also known as the Limete Tower, la Tour de l'Échangeur can be seen from almost everywhere in Kinshasa.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

Built in the 16th century, the tower is now in ruins.

Dedicated to "the father of U.S. life insurance."

This Colorado fire station has been in continuous operation for more than a century.

A spiralling hourglass-shaped tower rises from the forests in Denmark.

This elevator was built in 1907 to connect two neighborhoods separated by a steep, rocky cliff.

A timber transport car and a team of horses were needed to carry this lookout to the top of Mount Tarrengower in the 1920s.

This tower once served as a radar station during the Cold War.

The last example of an innovative piece of surveying equipment now stands in its inventor's hometown.

On top of a hill, this Catholic church overlooks the most Catholic island in Greece.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.