Atop this cliff ran a high city wall, dotted at regular intervals by sturdy towers.

Beneath the now-eroded red sandstone facade of its sturdy towers and classic portico is brick reinforced with steel.

It is a vast, walled fortress encompassing an entire park, with tall, sturdy towers at every corner.

Though church ruins were demolished, the sturdy tower remains standing in the present day.

The system was very reliable, with good locations, sturdy towers, clear paths, and backup power (large lead acid batteries).

I wandered up the hill to Bled Castle, which looks just as a castle should: yard-thick walls, sturdy, red-roofed towers and lofty parapets.

It has a severe façade, flanked by two sturdy towers, which betray its defensive function: the west front once formed part of the city walls of Rodez.

Despite this, however, Banstead still retains a village feel and has a number of buildings of historical interest, including the parish church with its sturdy tower and medieval spire.

It was girt by four sturdy towers of similar ambiguity: one flaming, one filled with water, one hollow, and one solidly packed.

Its stone walls were deserted; yet its sullen battlements and sturdy towers spoke of hidden men-at-arms, ready to rise should the ramparts be threatened by an enemy.