Towering dramatically above Lisbon, the hilltop fortifications of Castelo de São Jorge sneak into almost every snapshot. These smooth cobbles have seen it all – Visigoths in the 5th century, Moors in the 9th century, Christians in the 12th century, royals from the 14th to 16th centuries, and convicts in every century. Roam its snaking ramparts and pine-shaded courtyards for superlative views over the city’s red rooftops to the river.