PA-31T AT FL250 ENTERED AN UNUSUAL ATTITUDE AFTER LOSING BOTH ATTITUDE INDICATORS. EMER WAS DECLARED AND A LNDG WAS MADE AT THE NEAREST SUITABLE ARPT.

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ON IFR FLT; CTR GAVE ME PLT'S DISCRETION TO FL240. I HAD THE AUTOPLT ON AND WHEN I LOOKED OVER TO CHK AND SEE WHAT DISTANCE I WAS FROM ZZZ1 AND LOOKED BACK AT THE ATTITUDE INDICATOR. I NOTICED THAT THE AIRPLANE WAS IN A STEEP TURN WITH AN EXTREME NOSE DOWN PITCH ATTITUDE. AT THIS POINT; I WAS IN AN UNUSUAL ATTITUDE AND INSTANTLY BROUGHT BACK THE THROTTLES TO SLOW THE PLANE DOWN. I TOLD CTR THAT I WAS DECLARING AN EMER AND THAT I HAD LOST MY ATTITUDE INDICATOR AND NEEDED ASSISTANCE. MY ATTITUDE INDICATOR AT THIS TIME WAS TUMBLING AND I LOOKED OVER TO CHK MY BACK-UP ATTITUDE INDICATOR AND IT WAS ALSO TUMBLING. ONCE I REALIZED THAT I HAD LOST BOTH ATTITUDE INDICATORS; I FOCUSED ON LEVELING THE WINGS AND PITCHING UP AND WAS ABLE TO GET THE AIRPLANE BACK UNDER CTL. I LEVELED THE PLANE OUT AT ABOUT 10000 FT MSL. I TOLD CTR THAT I HAD CTL OF THE PLANE AND THAT I HAD LOST BOTH ATTITUDE INDICATORS AND ASKED FOR ASSISTANCE TO THE NEAREST ARPT. CTR INSTRUCTED ME THAT ZZZ2 WAS CLOSE BY AND GAVE ME RWY LENGTH AND ARPT ELEVATION. I TOLD CTR THAT I WAS GOING TO LAND THERE AND THAT I WOULD CALL TO CANCEL MY IFR FLT PLAN WITH THE FSS DEPT WHEN I WAS ON THE GND; WHICH I DID.