A rainy day of remembrance at the Boston Marathon finish line. (Jared Wickerham / Getty Images)

The first anniversary of the Boston Marathon bombings was an occasion for memorials across the city. Beyond Boston, others stopped for a moment to remember what happened last April 15.

Tom Duggan hugs Sarah Rogo, who said they were both present last year at the marathon. (Andrew Burton / Getty Images)

Roses hang on a lamp post near the spot where the second bomb exploded. (Brian Snyder / Reuters)

All of the cities tweeted the same image simultaneously Tuesday morning:

A knitted tribute hangs on a street light along the marathon route. (Andrew Burton / Getty Images)