She unveiled a centenary plaque and planted an evergreen tree.

In September the church unveiled a plaque honoring him with "thanksgiving for 25 years of devoted service."

Boris Johnson also unveiled a plaque to mark his visit.

He also unveiled a plaque to commemorate the event.

Prince Charles unveiled a plaque commemorating the restoration of the fountain.

The Queen spent two hours touring the campus, including a short concert, and she unveiled a commemorative plaque.

It also unveiled a commemorative plaque on the façade of the house where she was born.

Since there is no way to make sense of such things, what people did, as always, was make speeches and unveil a plaque.

Then the Prime Minister gave a speech, and unveiled a plaque paying tribute to the four workers who had lost their lives.

The governor unveiled a plaque to commemorate the occasion.