Feeling a little down today, but here's a Place of the Day post nonetheless. This place has been on my list for a long time...someday I'll get there.
Still standing (for the most part) after 1800 years of change...a testament to its builders. Over 73 miles long originally, with a well-preserved 10 mile stretch near Northumberland that can still be visited. Langley Castle is the best place to start from...before you begin your walk in history.
Hadrian's Wall - Hexham, Northumberland, England