-Off the shelf, or, if you happen to live in a country designed by Slartibartfast, find a fjord. The view from my office window includes a fjord more than 500m

-Off the shelf, or, if you happen to live in a country designed by Slartibartfast, find a fjord. The view from my office window includes a fjord more than 500m deep; a couple of hours drive to the south, you can get down to 1,300m/4,000ft or so a few hundred meters from the shore. Edit: Xylakant beat me to it!