The travel theme this week at Where's My Backpack? is "round", and oh, how do you narrow that down? It's so open to interpretation, so full of possibilities. There are lots of things in this world that are round. Where to begin?Oh, OK. We just got back from a trip to Boston, and I had my camera working overtime for a few days. So. Any picture I use today will be from a trip to my northern home away from home.While wandering around Boston Common, we walked behind the Frog Pond, the area that is the site of the winter skating rink and the summer carousel and reflecting pool. It's no longer winter so the rink is empty. The carousel, not quite set up, has been broken out of its winter coverings.Also on the Common...spring finally approaches! It was strangely exciting to be in a city at the exact weekend that the seasons were changing. I looked up the path I had walked to my hotel just the day before and suddenly, there were puffy pink buds over my head. I have no idea what sort of buds they are and I'm willing to learn. But. Yay! Finally! It was a long, cold winter here in the northeast. I'm not alone in saying I'm glad it's changing.Meanwhile, on Beacon Hill... We were wandering the streets of Beacon Hill looking for interesting things--it's a neighborhood I don't know very well, but will absolutely visit more often, as it is a fascinating blend of wealthy and quirky--when this gorgeous bit of iron grillwork over someone's front door caught my eye. I love the combination of rigidity and soft shapes.While wandering among the open-air vendors along Faneuil Hall and the Quincy Market, I came upon a cart that sells sparkly whirligigs. I have no interest in owning one. But they sure looked pretty, flashing together in the sun that day.Also at Quincy Market, a light pole full of the roundest, bubbliest, grooviest street lights around.And finally...This building sits just behind the (currently closed) Government Station T-stop, and I've always loved the architecture, how this building makes that wide, smooth arc, like it's some kind of castle or something. On this day, partly because of the lighting and partly because of my ever-growing nerdery, this building particularly reminded me of the opening credits to Game of Thrones, where the buildings all move together like cogs in the giant Lannister machine.*stands around waiting for someone to punch her nerd cred certification sheet*And so, that's it for me. Enjoy checking out the rest of Ailsa's travel theme participants!Here's the GoT credits to play on your way out.[youtube=https://www.youtube.com/watch?v=s7L2PVdrb_8]