TV Guide Sky History 2 Wednesday

In London, Andy McGrath visits Britain's oldest shop and the inspiration for Alice in Wonderland's Mad Hatter, drinks coffee with a corpse at a Macabre Museum, uncovers a sacrificial altar in an ancient chalk mine, and discovers a 19th-century time machine hidden in an urban cemetery

Alice Roberts visits archaeological digs in the north of Britain, where finds include Scottish man-made islands that help paint a picture of Stone Age tech and evidence for the first Roman siege in the UK. There's also a look at Lindisfarne, which was violently sacked by the Vikings 1,000 years ago

Various traditions describe the Holy Grail as a cup, dish, or stone with miraculous powers capbale of providing eternal youth or sustenance in infinite abundance. As the Third Reich rose to power, Himmler and the SS became fixated on the Grail, interpreting much of the myth surrounding it as fact - and the quest for it as attainable

Some places in the world, record more Unidentified Anomalous Phenomena sightings than the rest. So many so, in fact, that people flock from all over the world just for the chance to glimpse a flying saucer

Unidentified Anomalous Phenomena have only recently been witnessed entering the ocean at very high speeds. Since Earth's oceans can be as much as six miles deep, is it possible that some of these UAPs were simply trying to get home?

Documentary drawing on archaeological excavations, expert commentary, 3D animation and historical reconstructions to delve into the mysteries, myths and arcane history of the Celts. It reveals brand new information about the ancient civilization. The first of three programmes explores some of the mysteries of how the early Celts emerged and expanded, from collapsed salt mines, to bizarre rituals and lost cities

Alice Roberts visits archaeological digs in the east of Britain, including new discoveries at a perfectly preserved 3,000-year-old village in Cambridgeshire. She also visits the theatre where Shakespeare premiered Romeo and Juliet and the location of the Battle of Barnet

Aerial views offer a fresh perspective on massive concrete arrows scattered across America. Plus, a giant chalk figure on an English hillside and a mysterious hole in the middle of a lake in Southern California

Some places in the world, record more Unidentified Anomalous Phenomena sightings than the rest. So many so, in fact, that people flock from all over the world just for the chance to glimpse a flying saucer

Unidentified Anomalous Phenomena have only recently been witnessed entering the ocean at very high speeds. Since Earth's oceans can be as much as six miles deep, is it possible that some of these UAPs were simply trying to get home?

Documentary drawing on archaeological excavations, expert commentary, 3D animation and historical reconstructions to delve into the mysteries, myths and arcane history of the Celts. It reveals brand new information about the ancient civilization. The first of three programmes explores some of the mysteries of how the early Celts emerged and expanded, from collapsed salt mines, to bizarre rituals and lost cities

Alice Roberts visits archaeological digs in the east of Britain, including new discoveries at a perfectly preserved 3,000-year-old village in Cambridgeshire. She also visits the theatre where Shakespeare premiered Romeo and Juliet and the location of the Battle of Barnet