Boston’s original 80-minute amphibious tour is narrated by “conDUCKtors” well versed in local lore and combines a land tour with a splash in the Charles River. Tours depart the Prudential Center and Museum of Science every 30 minutes daily from 9 am to one hour before sunset, and New England Aquarium daily from noon, all running until one hour before sunset. March 21-Nov. 27. Tours offered in multiple languages, from English to Korean, Cantonese, German, Italian and Brazilian Portugeuse. Tickets: $10.50-39.50.