Gold Rush Prospectors

4 1/2' x 4 1/2' forts, a popular size.
 
Eureka!

Eureka!

5' high 4 1/2' x 4 1/2' fort.

Columbia Claim

Columbia Claim

6' high 4 1/2' x 4 1/2' fort.

El Dorado

El Dorado

7' high 4 1/2' x 4 1/2' fort with sun porch.