This is the helmet of Miltiades the Younger, the badass general who led the combined Athenian/Plataian army against the Persian forces at the Battle of Marathon in 490 BC.
Ancient Rome in Google Street View. Discover how Rome looked in 320BC! The video gives just an introduction to this amazing addition from Google, but it is still quite informative and allows you to view Rome on a street view level.
[As requested by gulyaey.tumblr.com. I couldn’t find anything street view for 1-2AD, so this is the next best thing!]