Madrid to SevilleWe reached Seville from Madrid by train. Lots of walking needed for visiting the Seville Cathedral and the Royal Alcazar Palace. The Cathedral was built on a mosque but most of the parts were left unaltered. The tomb of Christopher Columbus is also placed in the Cathedral and has various stories connected to it. One can also hike up to the top of clock tower in the Cathedral. Seville is also called the orange city, and one can take a stroll on the sidewalks of oranges.