Agra is famous for taj mahal a monument,petha a sweet dish,and one more thing what is that?

pagal khana(mental asylum)

this is totally correct and should be choosen as best answer,but only if u feel it is correct my friend

sweats
jewellery is cheap and good quality
dresses are so good
red fort is good too

Hey once an Individual reaches there he/she tend to be everlsting linking to that city.Literally "AAA GIRA"...that's why the city called as "AGRA".while coming out of TAJMAHAL if any body looks back to TAJ he/she develops true love for this "City of Love"....
Aman Srivastava

The Fort, Itimad-ud-Daulah's Tomb, the Jami Masjid, their artisans who have maintained the tradition of pietra dura inlay work.

The Mental Hospital

for mental hospital Daya Baag and sikandara.

the third thing is 'leather industry' .......that,s it.

Mathura Oil Refinary

hey pagal , the 3rd thing is asylum (pagalkhana)

india's most famous mental hospital is in agra...!!

bas kya biddoo,the famous paagal khaana' aur kya.

paagal khana
jama masjid
fatehpur sikri
buland darwaza

Soami Bagh Samadh

The Soami Bagh Samadh is the mausoleum of Huzur Soamiji Maharaj (Shri Shiv Dayal Singh Seth) in the Soami Bagh section in the outskirts of the city. He was the founder of the Radhasoami Faith and the Samadh is sacred to its followers. Construction began in 1908, and it is believed that construction will never end. It is often seen as the "next Taj Mahal". The carvings in stone, using a combination or coloured marble, is life-like and not seen anywhere else in India. The picture shown is taken from the backside and shows only two floors. When completed, the samadh will have a carved dome and a gateway.

Dal Moth.

Its is also famous for it Gajjak, leather goods & also handicraft items.

Most unhygienic city.Poor in planning and not safer for tourist.

www.uptourism.com

There are many places n things in Agra which are famous:
Dayal Bagh
Fatehpur Sikhri
things made up of marble....
and many more.......