Unless you're cycling across thousands of miles of Siberian tundra, or you're one of those waiting-for-death geezers who have lost all interest in the world, you're going to want to take an occasional day off to be a tourist whenever you get to an interesting city, relic site, national park, or other such attraction. You spent all that effort to get there on a bicycle. You're not going to just ride past without stopping, right?

That said, I've met multiple such geezers on the road who never stop for attractions. Tragic when one gets to the age where all curiosity toward the world is dead. Kudos to them for still being able to cycle at least. The brain is just as important as the body...