Visit Paro’s fortress-like dzong and the adjacent watchtower which is home to the excellent National Museum. Rinpung Dzong was built in the 17th century on the bank of a tumbling river and is accessed by a traditional wooden bridge. It is home to a large monastic community. Its central tower is one of Bhutan’s finest, while courtyards, galleries and temples showcase colourful mandalas and paintings such as the Old Man of Long Life or the Four Friends (elephant, monkey, rabbit and bird) climbing on each other to reach fruit on a tree.