Ancient housing, modern communications. (And nakedly repaired - or removed - chimneys.)
How do you blend the old and the new?
The answer seems to be that if it's above the roof, you don't bother to blend. In fact, you consider yourself lucky if the installation guys don't destroy the roof in the process.
At street level, though, with a little care and a little paint, the electrical can be fairly unobtrusive, as with the house on the left. The plumbing is a tougher assignment. If you use copper, it can develop a nice patina. The house on the right chooses a less decorative approach, but it has a certain rough honesty to it, straight and simple.