short-answer: NO you cannot embed a map in the .ics file, but your calendar render could do it by parsing .ics file
long-answer:
RFC2445
was supersed by RFC5545
RFC5545
specifies in section 8.3.4, the following data types of which none allow you to have a map in an .ics file:
+-----------------+---------+--------------------------+
| Value Data Type | Status | Reference |
+-----------------+---------+--------------------------+
| BINARY | Current | RFC 5545, Section 3.3.1 |
| | | |
| BOOLEAN | Current | RFC 5545, Section 3.3.2 |
| | | |
| CAL-ADDRESS | Current | RFC 5545, Section 3.3.3 |
| | | |
| DATE | Current | RFC 5545, Section 3.3.4 |
| | | |
| DATE-TIME | Current | RFC 5545, Section 3.3.5 |
| | | |
| DURATION | Current | RFC 5545, Section 3.3.6 |
| | | |
| FLOAT | Current | RFC 5545, Section 3.3.7 |
| | | |
| INTEGER | Current | RFC 5545, Section 3.3.8 |
| | | |
| PERIOD | Current | RFC 5545, Section 3.3.9 |
| | | |
| RECUR | Current | RFC 5545, Section 3.3.10 |
| | | |
| TEXT | Current | RFC 5545, Section 3.3.11 |
| | | |
| TIME | Current | RFC 5545, Section 3.3.12 |
| | | |
| URI | Current | RFC 5545, Section 3.3.13 |
| | | |
| UTC-OFFSET | Current | RFC 5545, Section 3.3.14 |
+-----------------+---------+--------------------------+
To achieve what you want to do, your calendar renderer needs to parse either the calendar property LOCATION
(see 3.8.1.7) which is a string, or better if you have it you could parse the propertyGEO
(see 3.8.1.6 ) which is two floats giving longitude and latitude.