At the end of the Alabang-Zapote Road is the Las Piñas-Zapote flyover, officially called the Alabang-Zapote Centennial Flyover. By themselves, flyovers are not really notable, but this particular flyover is quite important for the City of Las Piñas.
First of all, it’s the only flyover in the city. (Follow it to the north and you’ll come across the Bacoor-Longos flyover, also the only flyover in Bacoor, beside the previously featured Aguinaldo Monument.)
Second, and more importantly, the flyover is responsible for fully integrating the city with the rest of Metro Manila. Before the flyover was constructed, the easy way to Makati was going to Alabang and taking the South Superhighway. Other difficult routes are through Parañaque’s Sucat Road going to NAIA and EDSA, and through a back-road onto Coastal Road (this route was by the bridge just to the northeast of where the flyover now stands). Before the flyover, Alabang-Zapote Road ended here abruptly as a T-junction.
With the construction of the flyover and the 6-lane street straight to Coastal Road, Las Piñeros have a direct and accessible route to Manila and Makati. This is a boon for those living in the eastern parts of the city since traffic is monstrous going to Alabang.
Interested people should check out the underside and vicinity of the flyover for a look at the Spanish-era architectural motif that decorates the Las Piñas Historical Corridor—starting from the Zapote Bridge to the southwest all the way to the Bamboo Organ Church
(sadly not in hi-res on Google Local). Update: Metro Manila is now fully covered in hi-res satellite imagery and the Bamboo Organ has now been featured.