The International House of Nothing
From Twilight Heroes Wiki
This building looks much like the International House of Auctions, except the layer of dust on everything is due to construction rather than years of disuse.
A poor man in bifocals explains their daring plan: to open a route between the present (or past, you guess) and future (errr, present) to enable trade. Unfortunately, work has stopped due to a lack of funds and repeated villain attacks from across the timestream.
So if you have some spare quarter chips, you're pretty sure he wouldn't say "no."
With no Ancient quarter chips
The workers unfortunately only take quarter chips. Anything more than that will upset their ability to explain to their grandkids how little a car used to cost.
Otherwise
You currently have X ancient quarter chips.