Every city builds one street to prove it has arrived, and Lisbon built the Avenida da Liberdade — ninety metres of boulevard laid out in the 1880s to do what the Champs-Élysées does, only with better pavements. This is the grand axis north, from the river end up to the park that crowns it.
Start at Praça dos Restauradores and walk up the centre, not the shopfronts. The mosaic underfoot, the plane trees, the quiosques (kiosks) selling coffee on the reservation — that's the avenue. The luxury logos are incidental. At the top, the Marquês de Pombal roundabout marks the hinge: behind the statue, the gates of Parque Eduardo VII open onto the clipped box-hedge parterre, two green ribbons climbing the slope in perfect symmetry.
Go up the side, detour to the Estufa Fria greenhouse if you want a cool half-hour under the laths, then keep climbing. The reward is at the top: by the Carnation Revolution monument, you turn around, and the whole axis falls away below you — parterre, Pombal, Avenida, and the Tagus closing it off. São Sebastião metro is a short walk down the far side.
