Agnes W
Google
The gardens are superb. The price (7.50€ per adult) includes the gardens, the cave (really nice) and a small prehistoric museum. The view is fantastic and cacti are beautiful. There are small paths, romantic spots with benches and cute stop overs. The cave is very interesting, a little adventure, it's very warm and humid inside, I recommend to visit it (guided tours are every full hour, last one starts at 17). The museum gives a bit more history behind the cave and olden times in Monaco.