Dharahara, also called Bhimsen Tower, was a nine-storey, 61.88-metre-tall (203.0 ft) tower at the center of Sundhara in Kathmandu.

It was built in 1832 by Mukhtiyar (equivalent to Prime Minister) Bhimsen Thapa under the commission of Queen Lalit Tripura Sundari and was a part of the architecture of Kathmandu recognized by UNESCO.

The tower had a spiral staircase containing 213 steps. The eighth floor held a circular balcony for observers that provided a panoramic view of the Kathmandu valley. It also had a 5.2-metre (17 ft) bronze mast on the roof.

Most of the tower collapsed in the 25 April 2015 Nepal earthquake, but the base remains. Sixty bodies were found in the rubble. Reconstruction of the tower commenced in June 2018.

More Info: en.wikipedia.org