Marolta was a municipality in the district Acqua Rossa in the district of the Swiss canton Ticino Blenio. On April 4, 2004, they merged with Castro, Corzoneso, Dongio, Largario, Leontica, Lottigna, Ponto Valentino and Prugiasco merged to Acqua Rossa.
- Parish church of Santi Bartolomeo e Gottardo, above 1402
- Oratory of Santa Maria Assunta, in the district " Traversa ", 1663
- Residence Romagnolo (18th century)
- Residence Vescovi
- Residence Martinoli
- Three Betkapellen.