Suggestions for celebrating a decade?

[nifercritter]

C & I are celebrating our 10th wedding anniversary this June. I want to do something unusual, memorable, or just plain romantic, but the catch is that it has to be on the cheap.

So far on my list of possibilities I have:
A night at the East Brothers Light Station http://www.ebls.org
A round trip train to Colorado (C & I both LOVE riding trains) BEST way to travel, seriously.

Any other suggestions for either:
+ destinations
+ restaurants
+ local or cheap stuff