Rome is a sprawling city that has so much to offer, and has tons of tourist spots for visitors to spend lots of money on.
At this point in the trip, we wanted to stop spending money on expensive museums and activities. In some cities we got lucky, like in London, where museums are free to visit. In other cities, we ended up spending a lot of money. The Rijksmuseum in Amsterdam, for example, cost almost €18 for each person (equivalent to $28). After doing that a few times, it really adds up.