5 Dollars - Elizabeth II National Dendrological Park 'Sofiyivka'

Sofiyivka park in Uman, Ukraine, was commissioned in 1796 by Polish magnate Stanisław Szczęsny Potocki as a gift to his wife Zofia — built almost entirely by serf labor. It passed to the Russian imperial crown in 1832 and became a center of botanical research under the Kyiv University system. The Cook Islands issued this piece as part of a broader run of Ukrainian natural heritage coins during the late 2000s, a commercially driven series with no connection to Ukrainian monetary authority.