The core of the Åland Archipelago is a dozen or so larger islands that are connected by bridges. Known as Fasta Åland (Ahvenanmaa in Finnish), this 'mainland' comprises 70% of the archipelago's land area – including its only town. It's also home to 90% of Åland's population. Fasta Åland offers more historical sites, cultural attractions and recreational activities than any other island – as well as receiving the vast majority of tourists.
Åland's capital is Mariehamn, on the southern edge of the mainland. From this urban centre the islands stretch north, west and east, connected by bridges but still sprawling across the Archipelago Sea. This means that even the Fasta can feel like a remote island. If that's what you're going for, it's easy to find a quiet corner, surrounded by nature and sea but still within striking distance of the capital.