Conversation so far:
when was the monument to the great fire of london built
the monument to the great fire of london was built between 1671 and 1677
whats the height of the monument to the great fire of london
the monument to the great fire of london is 62 m high
what's the cost of the monument to the great fire of london
the monument to the great fire of london cost £13,450

Question: who was the designer
Self-contained rewrite: who was the designer of the monument to the great fire of london