Artworks and artifacts at LongHouse, photography show in Southampton, new outdoor sculpture at the Parrish, landscapes at the Grenning Gallery, small works at Kramoris.

OLA’s Pachanga at Bay Street, opera days in Bridgehampton, Madoo lecture in Manhattan, piano recital at SCC, a play and auditions in Southampton, LTV benefit, choral auditions, and a garden lecture.

Babe’s diner to launch in Sag Harbor, Rita Cantina opens for the season, and an Artists and Writers dinner at Almond.

A two-vehicle crash on Napeague near the Ocean Colony Resort Tuesday morning resulted in serious injuries, according to East Hampton Town police, and traffic backups on the stretch for much of the afternoon. Detectives were still investigating as of Wednesday.