Construction of these limestone towers was entrusted to John Brown (1808-76).

The elegant limestone tower with French Renaissance detailing was completed in 1921 and is regarded as an architectural gems.

Directly below the 600-year-old limestone towers, the formal gardens rigidly paralleled the contours of the castle.

Roebling's bridge was supported by two limestone towers on each side of the gorge.

Due to severe deterioration, the limestone towers were replaced in 1886 with steel framed versions.

The building has an octagonal limestone tower with windows on all eight sides and a metal-covered dome topped by a ball finial.

In the late 1800s, the original log mausoleum was replaced by the limestone tower and monument at the same site.

A lighthouse has stood on this raised bit of land since 1531, though the present white limestone tower was built in 1845.

Vertine is regarded as one of Chianti's jewels for its limestone tower and fortifications.

Built in 1847, this limestone tower is 11 m high and 16.5 m in diameter.