Beaumont United States Big Hill is a federally-controlled underground petroleum storage site, one of four in the Strategic Petroleum Reserve program of the US Government.

Delaware United States An unusual and extremely large antenna consisting of a 500-foot-long flat array, built on the ground, and two vertical reflectors on either end.

Mayer historical United States Once the second largest electric-powered shovel in the world, now a museum. The 16-story coal scoop, which could be moved at a rate of 1/5 mile per hour on its set of eight tank treads, scooped the overburden off a seam of coal in a mine near Hallowell, Kansas, from 1963 to 1974.

The Pines historical United States A solar observatory on Big Bear Lake, in the San Bernardino Mountains. The observatory is located in the middle of the lake, accessed by a narrow spit, as surrounding the observatory with water reduces the distortion caused by terrestrial convection, the shimmering effect of heat radiating upwards from the ground.

Iron Hill historical United States Up on top of the hill above town, Bethlehem Steel’s once secretive and exclusive Research Center has been given to Lehigh University.

Iron Hill historical United States Bethlehem Steel’s hometown plant in Bethlehem, Pennsylvania, is one of the great monuments to the industry, and now a sprawling casino.

The former Bethlehem Steel headquarters building is now empty of people, and filled with mold.

The Bethany Relay Station was the first of five dedicated Voice of America shortwave transmission stations to be constructed in the USA, going online in 1944.

Berthoud Pass, on the Continental Divide, is crossed by Highway 40. The pass was best known as a ski attraction, and was one of the earliest ski hills developed in the state.

The Snowflake Museum in Jericho features the work of Wilson Bentley who lived his entire life in Jericho, and became fascinated with ice crystals, the building blocks of snowflakes.