bizarre, curious, eerie (also eery), far-out, funny, grotesque, kinky, outlandish, out-of-the-way, outrageous, outré, peculiar, quaint, queer, queerish, quirky, remarkable, screwy, strange, wacky (also whacky), way-out, weird, wild

baffling, bewildering, confounding, mystifying, perplexing, puzzling, shocking

aberrant, atypical, fantastic (also fantastical), flaky, freak, freakish, idiosyncratic, marvelous (or marvellous), prodigious, rare, singular, uncommon, unique, unnatural, unusual, unwonted

unconventional, uncustomary, unorthodox

conspicuous, notable, noticeable, outstanding, prominent, salient, striking

incomprehensible, inconceivable, incredible, unbelievable, unimaginable, unthinkable

extraordinary, phenomenal, rare, sensational, spectacular

singular, uncommon, unique, unusual, unwonted

conspicuous, notable, noticeable, outstanding, remarkable

impressive, smashing, striking

mind-bending, mind-blowing, mind-boggling

animating, energizing, enlightening, enlivening, exciting, galvanizing, invigorating, stimulating

alluring, attracting, attractive, beguiling, bewitching, captivating, charming, enchanting, entertaining, enthralling, fascinating, interesting