FF Mark, a geometric san serif typeface, definitely has an amazing website. There were a lot of contenders for cool websites I could have picked, but this one took the cake for me. It doesn’t have your typical website navigation, but allows the user to experiment and try out their typeface in a variety of different ways. While it’s not insanely experimental, it works very intuitively and allows you to explore a lot of awesome things. Go check it out! I highly recommend it.