Rostock is a port city in northeastern Germany on the Baltic Sea. It's known for its maritime history, as well as its university, which dates to 1419. The city's Gothic St. Mary's Church features a towering spire and a choir that's one of the largest in northern Europe. The city's Warnemünde district is a popular seaside resort, with a wide sandy beach, a pier and a lighthouse. The lively harbor district has a variety of restaurants and nightlife venues.