check out africa's first underwater hotel room at zanzibar.ed by swedish engineers with three levels. a room cost $1,500 a night. only six guests have slept in it so far. there are other underwater hotel rooms, including one in florida. this was the very first on the african continent. >> i've been wondering where to go on spring break with my kid, we're going to zanzibar, herb, you and i. we're like redford on that boat. we're going together, you, me and the ocean. >> i'll be mixing the drinks. >> and your daughter, clearly. >> i don't like mai tais. thanks for watching "street signs". >> "closing bell" is up next. >> sounds good. >>> hi, everybody, we're into the final stretch. welcome to the "closing bell." i'm maria bartiromo at the new york stock exchange. history was made today once again when the dow crossed the 16,000 mark for the first time ever. >> we're not there now, though. it has pulled back a little bit. the question will be for the next hour, can it close above 16,000 for the first time in history. in fact, that's not the only