"With a combination of Nvidia DSR, and Microsoft ICE; I created this large resolution panorama.

Other Half-Life 2 Panoramas (8000 x 2790px):
HL2 Citadel:
https://steamcommunity.com/sharedfiles/filedetails/?id=1918432845
HL2-EP1 Citadel:
https://steamcommunity.com/sharedfiles/filedetails/?id=1918396591
HL2-EP2 Citadel:
https://steamcommunity.com/sharedfiles/filedetails/?id=1918415814

High Resolution Half-Life 2 Panoramas (12288 x 4320px)
HL2 Water Hazard Outpost:
https://steamcommunity.com/sharedfiles/filedetails/?id=2015553753
HL2 Ravenholm Entry Point:
https://steamcommunity.com/sharedfiles/filedetails/?id=2015560175
HL2 Coast Port
https://steamcommunity.com/sharedfiles/filedetails/?id=2020656564

Super High Resolution Panorama (28672 x 6480px):
HL2-EP1 Citadel:
https://steamcommunity.com/sharedfiles/filedetails/?id=1920152997"