The Outpost play area for children (and the young at heart) is seen under construction.

This rendering is of Golden Gate Meadow. It's meant to be a gathering area surrounded by gardens, tall native grasses and perennials. The park…

This rendering shows the Campfire Circle, with a central gas firepit and seating for up to 75. It's planned as a spot for ranger talks or comm…

The aerial rendering shows how the Presidio Tunnel Tops will fit into the larger Presidio area.

Space is a precious commodity in San Francisco.

This rendering shows the vision of a green oasis in San Francisco set atop -- and also hiding -- a busy highway tunnel.

People view the flooded Windsor Bridge along the Hawkesbury River in Sydney, July 4.

Homes and roads are submerged from the swollen Hawkesbury River in Windsor, northwest of Sydney, July 4.

Road signs are seen submerged under floodwater along the Hawkesbury River in the suburb of Windsor, on July 4.