London

The treasure hunt map of Greenwich (click to enlarge)

Greenwich
17 The tunnel
Take the DLR to Island Gardens and disembark for Greenwich Foot Tunnel. Designed by Sir Alexander Binnie and opened in 1902, the tunnel allowed people who lived south of the river to reach their jobs in the docks of the Isle of Dogs without relying on the expensive, unreliable ferry. At each end is a glazed cupola, with a plaque listing those responsible for its construction. What’s the surname of the ‘resident engineer’?
Answer

18 The market
Wander past the boarding currently concealing the Cutty Sark and cut along Romney Road. On your right is Greenwich market, granted its Royal Charter in 1849, and now specialising mostly in arts and crafts. There’s a stone above the entrance on this side, but when was it erected? And we’d like the answer in Roman numerals, please (you should find nine letters).
Answer
Feature continues

19 Old Royal Naval College
Taking care to admire the views across the river to your right, walk further east to the collection of Wren’s white buildings and clipped green lawns that make up the college (now part of the University of Greenwich and Trinity College of Music). A couple of minutes in, you’ll find a square to your left with a fountain in the middle. With your best lookout’s eye, try to spot the stone needle. Although most of the memorials in these parts are to British sailors, here you’ll find a tribute to a Paris-born naval man who volunteered to join the search for the ‘illustrious navigator’ Sir John Franklin in the Arctic in 1851. The Frenchman returned to those cold seas in 1853, meeting his end when he fell through a crack in the ice near Cape Bowden. What was his surname?
Answer

20 Painted Gallery
The walls and ceilings of this gallery (to the north of the square above) make up a dedication to the English monarchs, particularly William and Mary, painted by Sir James Thornhill in the early eighteenth century. The room has hosted many a grand naval luncheon, and Nelson himself lay in state here from January 5-7 1806, before his funeral. Be sure to grab one of the guides on the right, just up the steps as you come in. On the far western wall you’ll find a painting by Thornhill of the royal family, with St Paul’s Cathedral looming in the background. In the bottom right is the artist himself with arms outstretched (some say because he was asking for more money). He was paid just £3 per square yard for painting the ceiling. How many pounds per square yard did he get for painting the walls?
Answer

21 National Maritime Museum
Head north, cross the road, and stroll between the gigantic buoys (one red, one green) leading to the Maritime Museum. With more than 2 million items in its collection, this thoroughly ship-shape institution is the largest of its kind in the world, and well worth a wander round. Among the naval portraits and historical artifacts (including the uniform in which Nelson died) there are plenty of hands-on activities for kids. Our clue here is hidden on the upper deck. Amid the collection of telescopes and astrolabes, hung between busts of Edward Troughton and George Biddell Airy, you’ll find a 3D model of the universe dating back to 1624. It’s an ‘Italian armillary sphere’, but what is the last name of its creator?
Answer