What does "short walk" mean?

Context:
Highlights of your visit to St Paul’s Cathedral will include the following features: The Golden Gallery, located 530 steps above ground level and running around the perimeter of the dome; The Dome, which is over 111 metres high and decorated by beautiful mosaics and murals; The Stone Gallery, which is reached by climbing 378 steps; and the Whispering Gallery. St Paul's is a short walk from two other legacies of Sir Christopher Wren's genius, The Monument to the Great Fire of London and St Magnus The Martyr.