Portmarnock Beach, also known as Velvet Strand, is a top spot in Dublin for a stroll on silky smooth sand or a refreshing dip in the Irish Sea. This beach has historical significance too, serving as a makeshift runway for an epic transatlantic flight back in 1930. With lifeguarded swimming in summer and plenty of cafes nearby for a post-beach coffee, Portmarnock Beach is a must-visit for beach lovers and history buffs alike.