Locks on interior doors didn't become common until the 1950s to 1970s. If you live in a historic St. Louis home, you know all about its quirks. For some, that includes interior doors without locks.

Polarteknik designs and supplies interior train door systems for high-speed and intercity rail vehicles and metros. We deliver reliable, sustainable and efficiently produced interior door systems for ...

In September, 180 lucky people will be able to enjoy free guided tours of the interior of the Queensferry Crossing deck - the first event of its kind on the UK’s tallest bridge. Tickets are expected ...