Filming Locations:

• Some parts were shot abroad: Australia. Specifically, the Botanical Garden, Canberra; Commonwealth Park; Lake Burley Griffin; Old Parliament House in Canberra.

• There was also mention of action scenes shot in Sydney. 

Duration / Production Time:

• The film had delays: it took over a year or more to complete, because Hrithik got busy with other projects (notably Yaadein) and the film was sidelined.

• But there is no precise public data that I could find about how many days total filming took.

Other Interesting / Behind-the-Scenes Facts:

1. High Expectations: Because Hrithik and Ameesha’s pairing was very well received in Kaho Naa… Pyaar Hai, there was a lot of anticipation. That perhaps raised expectations the film couldn’t meet.

2. Criticisms: Reviewers considered the storyline clichéd “as old as the hills”. The music didn’t impress relative to earlier works. It was seen as out-of-sync with changing audience preferences. 

3. Promotion Issues: The director/director’s team felt the film was poorly promoted. Many audiences weren’t even aware of the movie when it released.

4. Mis-Timing: With delays, perhaps the film lost some freshness; what might have been timely earlier became less engaging by release. Also, audience tastes had shifted.

5. Scenes / Details: According to an article from Film Companion, a minor scene in the climax / hospital was improvised somewhat due to “assistant directors hastily pencilled in ‘Rohit’s parents’” because those roles weren’t clearly planned.