1 / 5
Anfiteatro
Attraction· 5 min from marina (403m)
Lisbon's Roman Amphitheatre is a surprisingly well-preserved ancient site tucked near the Sé Cathedral in Alfama, and it's free to visit. It's one of those places that sneaks up on you — layers of 2,000-year-old history right in the middle of a living city. Open Tuesday through Sunday from 10am to 6pm, with guided tours available if you want the full story.