A monorail system was built and installed by Computerised People Mover International at a cost of $4 million and then opened by the Duchess of Kent in 1991.
The system is 1 mile (​1 ¹⁄₂ km) long and travels on an elevated guideway to give views of the park grounds – the track crosses Flag Lane twice on its one-way circular shape.
The two halves of the park are connected by the system and there is one station in each part, one near the lion enclosure (Jubilee Square station) and one near the monkey building (Tsavo station, formerly known as Monkey Island Station).
Each train on the system can seat 24 passengers between its four cars and a full tour takes around fifteen minutes.

The system is a straddle beam monorail.
The layout has a separate depot and control room and carries approximately 2,000 passengers per day.
T&M Machine Tool Electronics made improvements totalling £300,000 to the monorail's drive system and electrics in 2009, including more than 25 miles (40 km) of new cabling.
The monorail was re-launched by music producer Pete Waterman during a visit on 23 July 2009, when Waterman drove the first loop of the new system.
The upgraded system uses pairs of 2.2-kilowatt (3 hp) AC motors for each carriage, with remote monitoring managed over a 5 GHz wireless link.
One week later a power failure occurred, requiring the first eight visitors of the day to be escorted off the monorail using a hydraulic lift.

In May 2012, Queen Elizabeth II took a tour of Chester Zoo in a specially redecorated monorail set painted in a Union Flag theme for her Diamond Jubilee.

In June 2019, Chester Zoo announced in its members' monthly magazine, that it would be closing the monorail as it "no longer fits our vision for a world-class modern zoo", as reported further by local media.
The system closed in early September 2019.
A monorail system was built and installed by Computerised People Mover International at a cost of $4 million and then opened by the Duchess of Kent in 1991. The system is 1 mile (​1 ¹⁄₂ km) long and travels on an elevated guideway to give views of the park grounds – the track crosses Flag Lane twice on its one-way circular shape. The two halves of the park are connected by the system and there is one station in each part, one near the lion enclosure (Jubilee Square station) and one near the monkey building (Tsavo station, formerly known as Monkey Island Station). Each train on the system can seat 24 passengers between its four cars and a full tour takes around fifteen minutes.
The system is a straddle beam monorail. The layout has a separate depot and control room and carries approximately 2,000 passengers per day. T&M Machine Tool Electronics made improvements totalling £300,000 to the monorail's drive system and electrics in 2009, including more than 25 miles (40 km) of new cabling. The monorail was re-launched by music producer Pete Waterman during a visit on 23 July 2009, when Waterman drove the first loop of the new system. The upgraded system uses pairs of 2.2-kilowatt (3 hp) AC motors for each carriage, with remote monitoring managed over a 5 GHz wireless link. One week later a power failure occurred, requiring the first eight visitors of the day to be escorted off the monorail using a hydraulic lift.
In May 2012, Queen Elizabeth II took a tour of Chester Zoo in a specially redecorated monorail set painted in a Union Flag theme for her Diamond Jubilee.
In June 2019, Chester Zoo announced in its members' monthly magazine, that it would be closing the monorail as it "no longer fits our vision for a world-class modern zoo", as reported further by local media. The system closed in early September 2019.
Chester Zoo