This four-for-one combo ticket gets you timed entry to four of London's best attractions. Climb aboard and take the helm of the world's last surviving tea clipper, journey into space at the historic home of British astronomy, discover Britain's seafaring past at the National Maritime Museum, and sample 17th-century grandeur at Queen's House. The Cutty Sark is a legendary 'tea clipper', which carried Britain's favorite beverage all the way from China in the 1800s. At the time it was the fastest ship in the world – which shows how much the Brits love their tea. Now it's an award-winning visitor attraction, where you can learn all about her record-breaking adventures all over the world, and explore the original interiors. When you're back on dry land, it's time to take a trip to the stars at the Greenwich Royal Observatory, where you can see the Great Equatorial Telescope, Harrison’s clocks, the Shepherd Gate Clock, the Time Ball and the famous Octagon Room. You can even stand on the Meridian Line, where the Eastern and Western hemispheres meet! Back to seafaring activities, your next port of call is the National Maritime Museum. This dedication to Britain's history of sea exploration includes the blood-stained coat of Admiral Nelson, who died leading a victory against Napoleon at the Battle of Trafalgar. You'll also find J.M.W. Turner's controversial painting of the battle, and artist Yinka Shonibare's scaled-down replica of the HMS Victory, 'Nelson’s Ship in a Bottle'. Your cultural excursion ends with a look around the immaculate Queen's House, the first Classical building in the UK. Climb the ornate Tulip Stairs, the building's original wrought-iron spiral staircase, and see both the recognisable Armada Portrait of Elizabeth I and the recently frescoed ceiling of the Great Hall. It's the perfect quadruple bill of history, science and culture, and a great day out in London's charming Greenwich.