

On August 24, 2016, City Council authorized a Cooperation Agreement with Texas Central Rail Holdings LLC to agree upon both entities working together throughout the federal, state and local review processes. Texas Central Partners is the private company currently developing the system that will begin construction late 2018/early 2019. It was built in 1902 along with the now-demolished Alvarado Hotel, and served rail passengers as the gateway to Albuquerque and the Southwest for over 90 years.The depot was built in the California Mission style, which was used extensively by AT&SF designers throughout the West.

Mermaid Heel's headquarters itself is made of bricks while having a body of water nearby as well as having multiple water drains on and around the building.

The building is identified by a large banner held up by a pole on its side while also having the name of the guild written above its entrance. However, its guild building has been shown. Mermaid Heel's exact location is unknown. She says "What are you talking about? Mermaid Heel is a guild limited to women." When Hibiki Lates jokingly said that he would have joined Mermaid Heel, Toby Horhorta angrily commented that the Blue Pegasus Mage " is way off their theme". Millianna confirms this when she responds to Erza's question, about if Shô and Wally are in the guild with her. Mermaid Heel is known as an all-female guild, with the entirety of its shown members being females.
