I'll be in Boston this weekend with my husband, who has never been. He's obsessed with the Big Dig -- and I want to make sure we experience it at least once. We won't have a car, so I'm thinking we'll just take a cab ride -- to where? -- to see the project. Any idea where I should tell the driver to go? We'll be staying at the Omni Parker House. Also, I'd like to see the Greenway -- but am not sure there's much to see when the city is covered in snow. Thanks for your help!