Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

What might look like a cliffside sacrificial altar at first glance is actually a stone compass pointing to cities and lighthouses all around the world.

This is one really big nut.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.