That gives us somewhere to start.
I think you might enjoy some Dvořák, symphonies and tone poems. My personal favourites are the 7th, and the Water Goblin. The Serenade for Strings is also beautiful.
You could try some Bruckner perhaps. The Symphonies are wonderful, and I'm a huge fan of the Second Mass in E minor.
Tchaikovsky is another obvious choice. Rachmaninov, Nielsen, Mendelssohn. Maybe Debussy, Faure, Ravel. You might like the earlier symphonies by Sibelius, and the tone poems.
Other favourites of mine which might interest you include Respighi, de Falla, Walton, Elgar, Kodaly, not forgetting Mahler.
And for the earlier music, Corelli's Concerti Grosso are wonderful, as well as Handel's.