Neermahal at Melaghar, Tripura was built by

A 'who built this monument' question is answered by matching the monument's documented construction period against each candidate ruler's reign dates -- the ruler whose rule spans the years the monument was actually built is the one credited as its builder.

Neermahal is a lake palace built in the middle of Rudrasagar Lake at Melaghar, in present-day Sepahijala district, Tripura -- the largest water palace in India and the only one in eastern India, blending Hindu and Mughal (Indo-Saracenic) architectural styles as a royal summer retreat. Its construction began in 1930 and was completed in 1938. Maharaja Bir Bikram Kishore Manikya Bahadur ruled Tripura throughout this entire window, from 1923 to 1947, and commissioned the palace during his reign.

• Kirit Bikram Kishore Manikya (b. 1933) acceded only in 1947, seventeen years after construction had already begun.

• Radha Kishore Manikya reigned 1896-1909, more than two decades before construction started.

• Birendra Kishore Manikya reigned 1909-1923, his rule ending seven years before construction began in 1930.

Therefore, Neermahal was built by Maharaja Bir Bikram Kishore Manikya.