S4 Filming — Madison Square Area

E 26th–28th St between 5th Ave & Park Ave South

Fan Spotted (S4) Season 4
High confidence — 85% accuracy
S4 Filming — Madison Square Area — historical photo
c. 1880s
S4 Filming — Madison Square Area — today
Today
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About This Location

Season 4 filmed across multiple blocks in the Madison Square neighborhood on Monday March 23, 2026 (4AM–11PM). The production notice lists the following blocks under a temporary parking hold: both sides of E 26th & E 28th Street; north side of E 27th Street between 5th Ave and Park Ave South; north side of Park Ave South between E 26th & E 29th Street; both sides of E 26th Street between Madison Ave and Park Ave South; south side of 5th Ave between E 26th & E 27th Street; west side of Madison Ave between E 26th & E 27th Street (half block).

Fan-photographed HBO production notice posted on-location, March 2026.

Official HBO production parking notice posted publicly on-location, photographed by Reddit user u/I_mwilling2 on March 23, 2026.

Fan Sighting

Spotted by u/I_mwilling2 on Reddit — View original post

Official HBO production parking notice for Season 4 filming on March 23, 2026. Covers multiple blocks around E 26th–28th Streets between 5th Ave and Park Ave South — the heart of the show's Gilded Age Madison Square setting. Posted March 18, 2026.

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