Friday

1) 2 p.m. Profiles in courage

“Stonewall 50” is the overarching theme for several exhibitions at the New-York Historical Society, among them “By the Force of Our Presence: Highlights from the Lesbian Herstory Archives,” a collection of photographs, books, posters, clothes and other mementos that seeks to prevent the erasure from history of the many contributions made by lesbians and queer women. The full collection of the Lesbian Herstory Archives is housed in Park Slope and can be visited in person or virtually. Another exhibition, “Say It Loud, Out and Proud: Fifty Years of Pride,” is a march through significant moments in L.G.B.T. history, with photographs of past marches from the 1960s to now. Admission: $13 to $21.

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2) 5 p.m. Different strokes

The best way to appreciate the city is by walking it, so take some time for a stroll before the next pit stop. You can get an elevated view from the High Line, an abandoned freight line turned into a public space, and walk south toward the Chelsea neighborhood and check out its many galleries, many of which can be found between 19th and 27th streets between 10th and 11th Avenues. Not far away, Team New York Aquatics is hosting this year’s International Gay and Lesbian Aquatics Championships, and as part of that, the New York group is presenting a Q. and A. on Friday, June 28, at 5 p.m. with three out-and-proud Olympians: the Americans Bruce Hayes and Betsy Mitchell, who won gold medals in 1984, and the Australian Daniel Kowalski, who got the gold in 2000. The event will be moderated by Jeff Commings, the author of “Odd Man Out: True Stories of a Gay Black Swimmer,” his autobiography about swimming, his Olympic trials and his struggles with homophobia. Tickets: $10 (and limited to 400 attendees).