Nothing ,because too simply there was a racing circuit and the tour bus wasn't available even the bus boat , just a waste of money. Next time , announce to people that there is an event , instead of paying for no experience .

If you have a small amount time in Monaco, this is a great way to see all the sights. We did the full loop on the bus first, then decided what we wanted to see more of, the hopped on and off as needed. The buses were clean, the drives through the tunnels are a lot of fun and it’s an experience to negotiate a roundabout in a tunnel if you have never done this before. Kudos to the drivers for negotiating such tight turning circles and busy roads. The stops are clearly sign posted, my only suggestion is perhaps some signage at the train station to direct you to the Grimaldi stop, as it was confusing to know how to get there without walking down a lot of stairs. It also could help to have people selling tickets at the stops rather than buying them on the bus, this could save some time. Would highly recommend this an option in Monaco.

This is such good value and offers amazing sights of Monaco and its beautiful surroundings. The drive through the tunnels is exhilarating. Watching the changing of the guard up on the mountain is spectacular.

This is the best way to tour Monaco. It is a real hassle getting into the city, especially by train - not recommended. Once in Monaco, the bus picks you up at many of the attractions. It was easy to show your tickets and get on and off the bus. The drivers were all very courteous and patient with any questions we had. All the drivers we met were able to help us in English.

Good way to get around the city as very hilly. Headphones didn’t work great. Ok information and hits the main sights

Great experience. Would definitely recommend as Monaco has many undulating levels. The bus goes to all major attractions.

We came via cruise ship. Pick up point was right at the end of the pier. Supper easy. Had a great day exploring Monaco.

Very friendly bus driver. Great route through Monaco. The commentary was a little quiet and we couldn’t hear much of the comments.

I have never been on a Hop On Hop Off sightseeing bus before and I was hesitant as I read reviews about the audio issues but I had a pleasant experience. When you pre-purchase the ticket from Viator, you simply present that ticket to the driver and they issue you with a receipt ticket that you can use to hop on and on during the day as well as a pair of disposable earphones that you plug into the audio box. The audio sound was clear and easy to follow (I had it in English). I went in the late morning and it wasn't too busy so I managed to get a seat at the rooftop with plenty of seats around me. It was definitely a good choice so you could see all the views of Monaco without a window blocking you. I stayed on the bus for all the stops and it took just under an hour in total, but you can stay on as long as you like. It was a great way to see all of Monaco when you're short on timeand just want bite sized facts of each of the landmarks.

I am so pleased I did this bus tour, without it I may of missed some places, it also saved my legs, the hills and steep pavement plus all the steps take there toll after a few days

Lovely friend staff, the red buses are easy to spot. Loved sitting on the top at the front great fun going through the tunnels.

A good way to see Monaco and you can get off the bus at any of 10 points along the way - a good commentary too. Worth the money.

I force my husband to do these wherever we go and he has grown to appreciate them. This one is no exception. The buses ran very timely and the English audio tour was excellent. All of our headphones and jacks worked just fine. You just need to turn the dial to #2 for English and hit the volume button up till you can hear. Great stops and really nice and kind drivers. It’s actually an incredible price considering you can use the ticket all day to get from downtown to the port and old city and up to the museums. Loved it! Would highly recommend. Buy ur ticket online and then show the QR code on your emailed receipt to the driver and you are good to go. Could not be easier.

This is an easy way to get around town without having to climb hills are walk through the tunnel. Pick up locations are well marked with a red sign. Bus was very clean and operated in good condition. The driver was very skilled on narrow curvy roads! I recommend buying your ticket online. I saw guests buying on the bus. Be aware they do not accept cash. Cards only. If you are not a French speaker, recommend using the headphones so you understand the stops (our driver spoke French at the stops). He required we let him know when we wanted to get off as he did not stop at every location. Unsure how guest up top advised (I did not go upstairs). Great way to get up the hill to the Palace.

A great way to see monaco .easey to use lots of stops to get on and get off would definitely recommend the best way to see monaco

Sebastian was our driver/guide,he was charming,good humoured,chatty,helpful and also very handsome,perfect for the job and a great ambassador for Monaco, couldn’t be kinder

Very poorly operated. Sound system so full of static we couldn't hear narrative. Bus driver allowed more people on that there were seats then actually yelled at them to sit down. We abandoned the ride halfway and walked. We have enjoyed the hop on hop off rides in other cities but not this one.

Enjoyed the experience. The driver was polite. I got on the bus at a site with no other people. But some of the other stops had a lot of people to get on, so expect some waits at the stops. The weather was perfect, so didn’t mind the waits. Since there was a lot of people at those stops, not everyone could get on the bus when it came. Not sure if it comes every 15 minutes. The audio tour was pre-recorded. The quality the sound was fair. The details were interesting but not a lot of depth. My headset worked, but the person next to me had to adapt, and use the plug-in behind our seat where no one was sitting as her plug in did not work. Not ideal if the bus had more people on it. Regardless, it’s a good way to see all the sites of Monte Carlo. Price was reasonable purchasing it here or at the bus stop. Total loop was about an hour. I chose to not exit at any point.

This is an excellent way of seeing Monaco while avoiding the need to walk up some of the steep inclines. A good route that takes in all the key sights, including parts of the famous F1 circuit, with some spectacular views from the highest points. Worth waiting for a bus with room on the top for the best views of course. We noted that some of the headphone jacks didn't work and this caused some people to move seats until they found working audio - the audio is interesting so well worth having a working headset. Overall this is very good value and a great way to see Monaco.

Great way to see the city especially if you don't want to walk up and down the hills. Don't forget that you're ticket also comes with a ticket for the boat bus! Quick 3-4 min trip across the bay gives you wonderful views and photo opportunities. Beware of low- hanging branches hitting your face if you're at the top part of the bus.