as well as other European countries, a movement to preserve classic gasometers has emerged in recent years, especially after Britain's National Grid announced in 2013 their plans to remove 76 gas holders, and soon afterwards, Southern and Scottish Gas networks announced that they would demolish 111 others. Christopher Costelloe, director of the Victorian Society, a leader in the campaign to preserve gasometers, has said that "Gasometers, by their very size and structure, cannot help but become landmarks. [They] are singularly dramatic structures for all their emptiness." The gasholder in Amsterdam has hosted the Awakenings Techno parties. United States Gasometers are comparatively rare in the US. Several were erected in St. Louis by the Laclede Gas Light Company in the early 20th century. These gasometers remained in use until the early first decade of the 21st century, when the last one was decommissioned and abandoned in place. The most recently used gasometer in the United States was on the southeast side of Indianapolis, but it has been demolished along with the adjoining Citizens Energy Group coke plant. Another pair of holders at the Newtown Holder Station, in Elmhurst, Queens, in New York City, was a popular landmark for traffic reporters until they were demolished in 1996 and became Elmhurst Park. The demolition of two larger "Maspeth Tanks" in nearby Greenpoint, Brooklyn, was described by The New York Times at length. A large MAN-type gas holder was erected just east of Baltimore, Maryland, by Koppers Inc. in 1949 and operated by Baltimore Gas and Electric for 32 years. The , structure, which could hold , was a landmark due to its unusual marking scheme, which had a red-and-white checkerboard pattern from up. The structure was demolished in July 1984. Approximately a dozen brick or concrete structures built in the latter-half of the 19th-century to house gasholders, known as gasholder houses, still exist in the United States. The Troy Gas Light Company structure in Troy, New York, is one of the largest remaining examples. As of early 2021, efforts were under way to save the Concord Gas Light Company Gasholder House in Concord, New Hampshire. It is unusual because the inner workings of the structure, including the cap, are still in place. PG&E operated gas holders at its gasification plants in California before natural gas pipelines were built. The San Francisco Beach Street Plant was built in 1899. The gas plant operated until