There are many interesting places to visit in Penang. Some are as the following examples:
SUFFOLK HOUSE
The first major site visited during the trip. Built in the 1780s on a vast estate owned by the founder of Penang, Captain Francis Light, the Suffolk House was considered the first "Great house of Penang" and it was named after the owner's birthplace in England. The unique mansion features authentic Anglo-Indian architecture, which earned it a special recognition from UNESCO. Over 40 years, the building have went through many stages of restoration. Today, part of the mansion has been converted into an a restaurant, which my classmates and I didn't get to see much....... (Boo!)
The Historic City of George Town
George Town was awarded UNESCO World Heritage status. The city was founded 200 years ago and has an impressive collection of historic buildings representing the cultural heritage of Penang's various ethnicities. On our second day, we stopped and visited the areas in the area of the Core Zone.
1) Kapitan Keling Mosque

~Founded in 1801, it is the largest historic mosque in George Town. Designed in Moghul architecture, it features beautiful minarets and domes. Didn't manage to get in as it was close during the morning.....
2) Khoo Kongsi
~Completed around 1906, the temple belongs to the Khoo Kongsi clan. The temple features fine Chinese architecture and craftmanship.
(The map of Khoo Kongsi and its surrounding areas I presumed. Don't understand Chinese much)
3) Islamic Museum (Syed Al-Attas Mansion)
~Built in 1860, this elegant home was once the proud abode of Syed Mohammad Al-Attas, a prominent Achenese merchant who was a stalwart supporter of the Achehnese struggle against the Dutch. This home has been converted into an Islamic Museum to educate about the heritage of the Penang's Muslim community.
(The front enterance of the museum)
4) The Pinang Peranakan Mansion
~This old mansion, former home of Kapitan Chung Keng Kwee, showcases over 1000 antiques and collectibles depicting the life of the Straits Chinese, or Peranakan as they were locally known. The richly decorated mansion is also a popular filming location for movies and television series.

(Some interior shots I took)