Nearest Station: Cutty Sark
Greenwich is a huge area, so let's just clarify that we're talking about the picturesque area around Greenwich Park, South of the River Thames, which is chock-full of interesting things to do. Start out by exploring the Cutty Sark, a restored tea clipper, before heading to the Royal Naval College and the Maritime Museum (film fans will recognise the area from memorable scenes in Thor: The Dark World). Behind these buildings on the top of a hill is the Royal Observatory, where you can stand on the historic meridian line. Less famous but no less fun is the Fan Museum, located on the edge of the park, opposite the Greenwich Theatre.