A trip to the Imperial City of Hue in Viet Nam.
We visited the Citadel, once occupied by the last dynasty of Viet Nam - the Nguyen dynasty - between 1805 and 1945. It is easy to get lost here, and some doors (entrances/exits) are not in use, so one must be very quite when walking around under the heat! Though I prefer walking - it is incredibly peaceful - there are small electric cars operating to take you from the gates to the sites inside (tickets required, but they are not expensive).
The second site we spent time at was the tomb of Khai Dinh, not to be missed with its incredibly intricate decorations, reflecting the alleged opulent tastes of the king. Out of all burial sites, this was the most expensive and took the longest to complete, and beautifully blends Vietnamese/Asian and French influences.
Another site to visit would be the tomb of Tu Duc, prized for its green tranquility.
The weather in Hue can be incredibly harsh, so choose your time wisely - early summer months can be sweltering, but winter months coincides with rainy season. March-April is recommended for its festivals, while July-August provides slightly more comfort, weather wise.
The best foods are on the streets, with must-tries (at your own risk!) including bún bò (beef noodle soup), and cơm/bún hến (small clams rice/noodle).
An interesting hotel is La Residence - a beautiful colonial structure, converted from the residence of the French Resident Superieure at the time.