The Kalyan minaret, a minaret of the Po-i-Kalyan mosque complex in Bukhara, present Uzbekistan, is today one of the most prominent landmarks in the city.

Designed by Bako for the Western Kara-Khanid ruler Muhammad Arslan Khan, it is made in the form of a circular-pillar baked brick tower, narrowing upwards.

The body of the minaret is topped by a rotunda with sixteen arched fenestrations, from which the muezzins summon the Muslims in the city to prayer.

There is a brick spiral staircase that twists up inside around the pillar to the rotunda.

The tower base has narrow ornamental strings belted across it made of bricks which are placed in both straight or diagonal fashion.

The frieze is covered with a blue glaze with inscriptions.One of the first instances of Mughal architecture in India, the minaret known as Qutb Minar, is erected near present New Delhi about 1230 to commemorate the military triumph of Qutb-ud-Din Aybak, founder of the Delhi Sultanate.

Made of fluted red sandstone covered with intricate carvings and verses from the Qur'an, the tower stands two hundred and forty feet (seventy-three meters) high.

Begun by Aybak, the Qutb Minar is completed by Iltutmish, who also builds Sultan Ghari, the first Islamic mausoleum in Delhi, for Prince Nasiru'd-Din Mahmud, his eldest son.

The crypt or the tomb is implanted in a Ghari (cave), approached by winding steep stairs made of stone, and supported by pillars and flooring.

The cave is covered by an unusual octagonal roof slab.

The exterior of the tomb structure built in Delhi sandstone with marble adornment exhibits a walled area with bastions (towers) on corners, which impart it the look of a fortress in aesthetic Persian and Oriental architecture.