'Royal Merit', and formally titled Mahalawka Marazein မဟာလောကမာရဇိန်စေတီ) is a Buddhist stupa, located in Mandalay, Burma (Myanmar), that contains the world's largest book.

In the grounds of the pagoda are 729 kyauksa gu or stone-inscription caves, each containing a marble slab inscribed on both sides with a page of text from the Tipitaka, the entire Pali Canon of Theravada Buddhism.

He was later to convene the Fifth Buddhist Synod in 1871, but wanted to leave a great work of merit by having the Tipitaka set in stone for posterity, meant to last five millennia after the Buddha.

Between the rows of stone-inscription stupas grow mature star flower trees (Mimusops elengi) that emanate a jasmine-like fragrance to the entire complex.

One revenue surveyor called U Aung Ban then came up with the idea of appealing direct to Queen Victoria since she had promised to respect all religions practised by her subjects.

This however turned to great sadness when they found that the pagoda had been looted from the hti, left lying on the ground stripped of its bells, gold, silver, diamonds, rubies and other precious stones, down to the Italian marble tiles from its terraces.

The next year, the Society of Pitaka Stone Inscriptions gave an iron gate to the south left open as the carved wooden panels had been destroyed by the soldiers.