Chronos has it's first hidden treasure!

O'er the horizon you may spot;
Where treasure may be got;
a tow'r 'o sand,
in a far away land
that water can travel not

You can bring them so much envy
With the Kay-be in an M-bee
However to find us,
You'll need special status;
At the start of the 19th century

Think you know the location of our hidden treasure? Come find out!

(Need a hint? The first number is actually negative.)