Present-day Intramuros comprises a centuries-old historic district, entirely surrounded by fortifications, that was considered at the time of the Spanish Empire to be the entire City of Manila. 

For travelers who want an easy walking tour in Manila, then Intramuros is for you. For first-time visitors in the country, Intramuros will give you a fairly good grasp of the Philippines’ Spanish colonial past.

1. Manila Cathedral

The grand Manila Cathedral, founded in 1571, is one of the most easily recognizable structures inside Intramuros. The current building is the fifth cathedral constructed after the previous ones were destroyed by natural calamities and the second World War.

The Manila Cathedral is also a popular wedding venue. The Cathedral is dedicated to the Immaculate Conception.

2. San Agustin Church

The San Agustin Church, founded in 1571, is designated as a World Heritage Site by UNESCO and a National Historical Landmark by the Philippine Government. San Agustin Church is the oldest stone church in the Philippines.

The present building, which is made of stone, is the third church to be built in the area as the first two wooden structures were destroyed by fire.
3. Baluarte de San Diego
The Baluarte de San Diego is a fortification along the walls of Intramuros. This protruding structure will allow the soldiers to get a better view of incoming invaders. Today, the Baluarte de San Diego features gardens and shaded walkways to accommodate special events and gatherings.
4. Casa Manila
Casa Manila is a museum in Intramuros depicting colonial lifestyle during Spanish colonization of the Philippines.
The museum is the imposing stone-and-wood structure c. 1850, one of the grand houses in Barrio San Luis (one of the four original villages of Intramuros) is located across historic San Agustin church and bounded by Calle Real, General Luna, Cabildo and Urdaneta streets. 
According to ivankhristravels.com, Wikipedia