Milton Keynes
When the builders dug up the ground to build on, they found some strange things.  The oldest was the fossil of a dinosaur fish, called an Ichthyosaur.  They also found a Roman farm - people can still see bits of it because they decided to leave it alone.  They also found some buried treasure (the Milton Keynes Hoard) which is now in the British Museum (with copies in the Milton Keynes Museum).