who designed it?
James Wyatt
Liverpool Town Hall
 An extension to the north designed by James Wyatt was added in 1785. Following a fire in 1795 the hall was largely rebuilt and a dome designed by Wyatt was built.
who built liverpool town hall? John Wood the Elder. where is it located? Liverpool, Merseyside.
wiki:154088
Liverpool Town Hall [SEP] Introduction
The town hall was built between 1749 and 1754 to a design by John Wood the Elder replacing an earlier town hall nearby. An extension to the north designed by James Wyatt was added in 1785. Following a fire in 1795 the hall was largely rebuilt and a dome designed by Wyatt was built. Minor alterations have subsequently been made. The streets surrounding its site have altered since its initiation, notably when viewed from Castle Street, the south-side, it appears as off-centre. This is because Water Street which ran to the junction with Dale Street, the west-east axis, was continuous and built up across the junction so that the town hall was not visible originally from that aspect.