America's Favorite Architecture

The first time I took a friend to D.C. woh had never been bafore, said when he first entered the subway remarked, "Whoever designed this place REALLLLLY liked Waffles!!!".

My main complaint about the Washington Metro system is that one doed not know upon entering a station, exactly which station it is, because they all look the same!

Perhaps some day WMATA will color code them....

David's point is quite valid; the stations are all uniform, which makes in-station identification visually impossible without the signs that announce the station name. (Would a city such as D.C., built on policy, procedure, protocol, have it any other way?)
As a regular rider of the Metro trains here, I've grown to love the design of the stations (and the trains themselves) for the clean, modernist lines (the few benches on each platform are simple, rectangular slabs of granite, appearing to hover over the floor), the coffered dome appearance (evoking Union Station for me, on some level) and the vast spaces enclosed around the long, long platforms stretching down the length of each station. The in-floor blinking lights, one of the methods used to announce the approach of the next train, is a helpful feature as well as a visually striking one. Even the map of the whole train system, shown farm more stylized as stations on a smooth line, rather than revealing the true course of those track lines, is a little work of modern art in itself.
There is some comfort also, in the familiarity of each station being identical, despite losing the ability to immediately recognize each stop, such as in Seattle's smaller system, full of artistically-different station decor.