In 1810, the first major change in the Gardens came with the decision to route the canal through the middle of the park - effectively cutting the gardens in half. The canal was designed by John Rennie.
There are two canal tunnels:
Cleveland Tunnel and Sydney Gardens Tunnel. Both tunnels are Grade II listed.
Cleveland Tunnel carries the canal beneath Sydney Road and Cleveland House, the former canal company headquarters. Cleveland House was built in the late 1810s almost 20 years after the canal and tunnel were constructed.

A depiction of Old Father Thames

Sabrina or Hafren, the water nymph

This is the hatch in Cleveland Tunnel that canal boats owners would use to pay their dues directly to the canal company in Cleveland House!

Canal Audio trail about Sydney Gardens