Arrive in Hue this morning and transfer to your hotel. Once Vietnam's imperial capital, Hue still carries the mood of royal history, old gardens and war-scarred walls. Visit a local village recycling hub working on environmental challenges through creative reuse, then try Hue's local specialty, salt coffee. In the afternoon, step into the Imperial Citadel, a huge city-within-a-city with temples, state buildings and the remains of the emperor's palace.