The arboretum was established in 1931 .
The arboretum was currently contains walking paths through over 40 types of trees , including conifers from North America and Europe such as Douglas fir , larch , and Lawson cypress .
The arboretum was established in 1931 , and currently contains walking paths through over 40 types of trees , including conifers from North America and Europe such as Douglas fir , larch , and Lawson cypress .