Landscape changes associated with rapid urbanization are one of the most dramatic forms of land transformation. It is essential to quantify landscape patterns and their changes for urban landscape management policy-making. In the compact city, the growth of building height is the main form of landscape expansion. How to quantify the three-dimensional (3D) landscape patterns and their changes has become a hot topic in landscape pattern analysis, which is vital to understanding ecological consequences of urbanization and the interaction between architectural landscape and green infrastructure landscape. However, further research is needed to improve 3D landscape pattern quantitative analysis in comparison to previous studies that mainly focused on urban horizontal expansion. The focus of this paper is the vertical and horizontal urban landscape changes based on high-resolution remote sensing images and building census data by employing 3D landscape metrics and the landscape connectivity index to quantify the rapid landscape pattern changes in the Futian District, Shenzhen City. The results showed that (1) vertical growth was the main expanded feature of architectural landscape from 2003 to 2016. The high-rise buildings (27-99 m) and super high-rise buildings (over 100 m) dominate architectural landscape in Futian. These changes resulted in an increase of 6.53 m in the average building height and an increase of 135.58×10⁶ m³ in building volume. However, it only increased the building coverage ratio by 2.42%, which indicated typical three-dimensional spatial heterogeneity in Futian. (2) The architectural landscape pattern turned from the "Stepped" style into the "Pyramid" style. Because of the vertical expansion of the architectural landscape, the proportion of built-up landscape and green landscape changed from 1.20:1 to 0.99:1, which resulted in a decrease of 4.03 km² of built-up landscape and an increase of 2.80 km² green landscape. (3) The transformation of landscape type and its spatial influence showed that the three-dimensional transformation of the built-up landscape released the space for green landscape, but also restricted the external connectivity of the green landscape, which led to the Central Business District (CBD) having low-level landscape connectivity. The green landscape patches are isolated by high architectural landscape. There are inadequate corridors to connect green patches. Our results provide a scientific basis for urban landscape optimization and land use policy-making.