No one knows heaven's paradise, but earthly paradises created by mortals may mirror the paradise of the afterlife. Mughal Emperor Shah Jahan crafted paradises with Diwan-e-Khas in Delhi and the Taj Mahal in Agra. Enthralled by the splendor, he inscribed a Persian couplet on the Diwan's arches: 'If there is paradise on earth, it is this, it is this, it is this.' The title and contents of this book echo the crux of this couplet. This travelogue explores the author's five-decade journey through European monarchs' architectural marvels of paradisiacal proportions and their eminence relative to South Asian architectural resurgence under Shah Jahan in the 17th century CE.