Heute in Heidelberg! (Today in Heidelberg)

Sunday February 6th - We took our first excursion since our arrival to the beautiful town of Heidelberg.  This place has it all; A Castle (1214 AD), an awesome Altstadt (Old Town), Bars, Cafes, Restaurants, a River Walk.  All this and only an hour from our house!  The weather was amazing (50 and sunny) for what would have been a snowy Sunday in Chicago.  More than anything it showed us how much unbelievable history is right outside our back door.  Can't wait for next weekends excursion.  Any suggestions???