Portals

An ancient space civilization erected a system of shortcut portals throughout the galaxy.

Source: tatoeba (3983686)

He in the forefront, tallest of the tall, / poleaxe in hand, unhinging at a stroke / the brazen portals, made the doorway fall, / and wide-mouthed as a window, through the oak, / a panelled plank hewn out, a yawning rent he broke.

Source: tatoeba (6839909)

I see another but a tinier Troy, / a seeming Pergama recalls the great. / A dried-up Xanthus I salute with joy, / and clasp the portals of a Scaean gate.

Source: tatoeba (7053924)

He closed the yawning gates of hell; The bars from heaven’s high portals fell; Let hymns of praise His triumphs tell! Alleluia!

Source: tatoeba (7583336)