You could do a trip to Corvin castle in Hunedoara (about 3 1/2 hours west of Timisoara), it’s very impressive.
Train to Oradea. A lovely under-rated city. Take a look at some images.
Will you be renting a car or travelling by public transport? Also, are you more interested in nature or history?
Best options would be:
- Oradea (maybe + Arad) - 2.5-3 hours by car
- Corvin Castle (+ Densuș Church and, if you are interested, Sarmizegetusa ruins) - 2.5-3 hours by car
- Cheile Nerei National Park (a really nice area with easy hikes) - 2.5 hours by car
- Novi Sad in Serbia - 2.5 hours by car, but it's unlikely you will find a company that is okay with crossing the border with Serbia and public transport links are inexistent
There is also Szeged in Hungary, which has the advantage of being only 2 hours away, but in my opinion, if you'd like to see this kind of city, then just go to Oradea, as it's nicer.Edited: 28 January 2018, 17:17
Looking to use public transport, but thank you for the recommendations. They all look amazing. Thanks.Edited: 28 January 2018, 20:12