It depends where your starting point is.
The Atlantic Ocean if you want to get there earlier.
If you traveled from Bangor, Maine to London, England, you would cross the Atlantic Ocean.
The North Sea
You would travel in a Northwestern direction, and would go over the English Channel.
You'd need to cross the English Channel to go from London to Paris. If you're going by rail, you cannot cross OVER the Channel - but you can cross UNDER it. To Vienna, you'll cross a great number of rivers, but the most important is probably the Rhine. Lots of bridges that way.
London Bridge spans the River Thames.
London Bridge spans the River Thames.
south america
to cross over a body of water
the Thames river
pee water punk
Kings Cross and Charing Cross.