The tomb of Sher Shah Suri. Sasaram- second tallest tomb in India

 tomb of Sher Shah Suri,,Sasaram,Bihar, Flickr

 tomb of Sher Shah Suri,,Sasaram,Bihar, wikipedia

 Sher Shah Suri (hailing from present day Haryana state, India; 1486–22 May 1545), founded the Sur Empire in North India, with its capital at Delhi. An ethnic Pashtun, Sher Shah  served in the mogul army and later became a commander under Babur.  He was appointed the Governor of Bihar in 1537 and during this period Babu's son Humayun was away  elsewhere on expedition, Sher availed himself of this chance, took control of Bengal (crowned in 1540) and established the Sur dynasty.`He was an excellent administrator and military strategist and during his
 

Sur Dynasty Shah Suri.  en.en.wikipedia.orgw

Above image: Imaginary sketch work of Sher Shah Suri ( 1486–22 May 1545) by Afghan artist Abdul Ghafoor Breshna; Spouse:  Malika Bibi (?).issues: Islam Shah Suri (Jalal Khan) and Adil Khan.........

Postal stamp in honor of Emperor Suri. Rainbow Stamp Club

five year rule, he made certain reforms in the civil and  military organization. He was the first one to issue the  first Rupiya from "Taka" and re-organised the postal system of India, besides reviving  the historical city of Pataliputra (Patna) which had been neglected since 7th century. He was instrumental in laying Grand  Trunk Road from Chittagong in the frontiers of Bengal province  in NE India to Kabul in Afghanistan in the far NW  of the country. He died on 22 MAY 1545 in an accidental gunpowder explosion in the fort of Kalinjar of Rajputs, Bundelkhand while on a war expedition. As he could not penetrate the sturdy fort, he was in the middle of blowing up the fort walls with explosives  and was seriously injured.

 tomb of Sher Shah Suri,,Sasaram,Bihar, wikipedia

 Sher Shah Suri's mausoleum (Tomb ) stands on the GT road in the middle of an artificial lake in Sasaram town, Bihar.

Sasaram town, Bihar.Maps of India

This imposing, beautiful Indo-Islamic structure was buiilt between 1540 and 1545 and its architect was  Mir Muhammad Aliwal Khan. The tomb was constructed  during the reign of  Sher Shah and  his son Islam Shah. According to the inscription,  the date of completion was  August 16, 1545, three months after the death of Sher Shah.The octagonal main tomb is topped by a dome, 22-metre in span and surrounded by ornamental domed kiosks. These kiosks, it is said, were once covered by coloured glazed tiles. This mausoleum is made of  red sandstone  almost square shaped and is often referred to as the second Taj Mahal of India. The tomb (at the centre of the lake) is  on a square stone plinth with domed kiosks, impressive chhatris at each of its corners.  Surrounding the main dome are eight pillared cupolas on the corners of the octagon of the chamber walls. The interior of the tomb is  well ventilated and lit as light passes `through large windows on the top portion of the walls fitted with stone jalis of varying patterns.In addition, there are stone banks and stepped moorings on all sides of the plinth, that can be accessed from the mainland through a  broad stone bridge. Its height from the floor to the apex of the dome is 101 feet and its total height above the water is over 150 feet. The octagon forming the tomb has an interior diameter of 75 feet and an exterior diameter of 104 feet. The tomb is the second highest in India which attracts tourists

Tit-Bits:

01. Sasaram sometimes (also spelled as Sahsaram), is the administrative capital of Rohtas district, Bihar.

02. . Suri's father's tomb - tomb of Hasan Khan - is also in the same town and goes by the name of  Sukha Roza.
https://en.wikipedia.org/wiki/Sasaram#Tomb_of_Sher_Shah_Suri