Towers

This abandoned lock-up was saved because of its connection to a local football team.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

One of two Irish-style round towers in Scotland, this structure has mysterious origins.

The western face was supposedly left clock-less to snub the Welsh.

One of the world's heaviest musical instruments towers within a popular urban park.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

An ancient octagonal weather station named for the eight Greek gods of wind.

The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

These tenacious 14th-century towers defied demolition and are now a fairytale vacation rental.

The "Paris of the Prairies" wouldn't be complete without a replica of the iconic landmark.

A 246-foot-high revolving restaurant rises unexpectedly from a forested Finnish hilltop.

Colorful curls of hand-blown glass form a captivating tower in San Antonio's Central Library.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

Dedicated to the first German Chancellor, Otto von Bismarck, this aging edifice is the only one of its kind in the Americas.

A sophisticated astronomical tower built by one of the greatest Persian scholars of the Islamic Golden Age.

During World War II the Thorp building was guarded by the OSS, FBI, and US Navy because of the top-secret bombsight being produced there.