white elephant

a white elephant (something that is large and unwieldy and is either a nuisance or expensive to keep up) — обременительное или разорительное имущество, обуза; подарок, который неизвестно, куда девать;подарок, от которого не знаешь, как избавиться ; ненужная вещь

Example 1: Bob's father-in-law has given him an old Rolls Royce, but it's a real white elephant. He has no place to park it and can't afford the gas for it. (McGraw-Hill Dictionary of American Idioms and Phrasal Verbs)

Example 2: Those antique vases Aunt Mary gave me are white elephants. They're ugly and I have no place to put them. (McGraw-Hill Dictionary of American Idioms and Phrasal Verbs)

Origin:
1850–55; from the perhaps apocryphal tale that the King of Siam would award a disagreeable courtier a white elephant, the upkeep of which would ruin the courtier {король Сиама, желая разорить кого-л. из своих подданных, дарил ему священного белого слона, содержание которого обходилось очень дорого}