Terceira is one of the Azores islands in the Atlantic Ocean. Terceira is home to Azores' oldest city Angra do Heroismo, a UNESCO World Heritage Site. If you like nature, visit the Algar do Carvao caves or Monte Brasil park. If you prefer history, stroll through Angra do Heroismo and don't miss the Town Hall! You can also climb up to Alto da Memoria for a beautiful view over the city.
Sao Miguel in the Azores is also known as The Green Island - and for a good reason! If you love nature, hiking and taking in beautiful vistas, this is the place to visit. You can rent quads and go canyoning. There are also interesting museums and research places dedicated to the volcanic nature of the islands - visit them and you will almost certainly learn something new.