The Helium Time Columns monument was erected in 1968 in commemoration to discovery of helium, which celebrated its 100th anniversary that year. The structure is basically a stainless steel sundial. It contains four time capsules containing various items that are scheduled to be opened on different dates. One of which has a passbook with a $10 deposit in it, so it could earn $1 quadrillion upon its opening in 2968.
The fact that the Helium Time Columns is located in Amarillo, Texas is also well thought out. It was also to honor the city for playing a major role in gas production and helium reserve since 1927.
The Helium Time Columns were originally erected at the I-40 and Nelson. It was transferred in 1982 to the Don Harrington Discovery Center where visitors can find it today.