1. Lisbon, Portugal
Best for: beautiful streets
Lisbon may be built on lung-busting hills, but it’s well worth packing your walking shoes. Stroll the Baixa district downtown for wide boulevards, monumental squares and elegant tiled townhouses, which were built after a devastating earthquake in 1755. Then hike up the steep streets of the Alfama district, home to historic, pastel-coloured buildings and small squares crowded with cafés. Soak up the city in golden hour as you watch autumn’s early evening sunsets from the Miradouro de Santa Luzia or the Miradouro das Portas do Sol, viewpoints that overlook the city’s red-roofed houses and the River Tagus glinting beyond.